I287D Wireless Visitor Chime and Alarm (Vietnamese Voice)
Sold: 13854 sản phẩm
490.000 ₫ 441.000 ₫ (VAT included)
Technical specifications of the i287D
Infrared Sensor Power Supply: 2 × AAA batteries
Or 5V / 1A micro USB adapter
Chime Transmitter Power Supply: 90–230VAC
Wireless Frequency: RF433MHz
4 Volume Levels: 80dB with flashing LED indicator
Sensor-to-Chime Detection Range: 30–100m, depending on obstacles and environment
32 chime melodies and alarm tones
Detection Angle: 120°
Detection Range: 2–3m (>35°C), 7m (<32°C)
Supports adding up to 4 sensors to 1 chime
One sensor can connect to multiple chimes
Wireless Visitor Chime: An Effective Solution for Businesses and Homes
Wireless visitor detection technology has become a smart, convenient solution for many modern homes and businesses. This product helps welcome visitors while improving security and protecting property from unauthorized intruders. Let’s take a closer look at the wireless visitor chime, how it works, its practical applications and the benefits it offers.
1. Introduction to the Wireless Visitor Chime
A wireless visitor chime is a modern device that uses infrared sensor and wireless connectivity to detect movement within a monitored area. When someone passes through the set detection area, the sensor sends a signal to the chime, letting users know that a visitor or someone else has arrived. This helps users respond promptly. The product is particularly useful in stores, offices, hospitals and homes that need greater security and safety. Its infrared sensor detects movement with high sensitivity and operates under different lighting conditions.
Infrared Sensor Technology
The infrared sensor uses infrared radiation to detect changes in temperature and movement within the monitored area. When a person or animal passes through, the sensor detects the change and activates the chime. This technology provides accurate motion detection over a wide area and is unaffected by environmental factors such as light or weather.Wireless Radio Connection
A notable feature of this product is its use of radio waves for wireless communication between the sensor and the chime. Radio waves can pass through obstacles. allowing the device to operate even when the sensor and chime are in different rooms or do not have a direct line of sight. This provides greater flexibility and convenience during installation and use.2. Applications of the Wireless Visitor Chime
A wireless visitor chime has many practical applications in daily life and business. The most common include:
2.1. Use in Stores, Offices and Clinics
Retail stores, offices and clinics often use wireless visitor chimes to detect when a customer or patient enters. When someone comes through the door, the chime sounds so staff can promptly greet and assist them. This creates a good impression on visitors and helps staff work more efficiently.2.2. Security for Homes and Stores
An important application of the wireless visitor chime is helping protect property and maintain security. The device can detect an intruder at night or when an area is unattended. If it detects unusual movement, the chime sounds, allowing users to respond promptly and help prevent dangerous situations.2.3. Monitoring Areas with Security Cameras
In areas equipped with security cameras, the wireless visitor chime can also alert users when someone appears near an entrance. This allows the person monitoring the area to check the camera promptly, assess the situation and decide how to respond. The device is particularly useful in large office buildings, warehouses and other places requiring close security monitoring.2.4. Flexible Use at Multiple Entrances
With the ability to connect multiple sensors to one chime or connect one sensor to multiple chimes. The product can monitor several areas at once without requiring too many devices. This saves costs and improves monitoring in places with multiple entrances or large spaces.3. Benefits of the Wireless Visitor Chime
Using a wireless visitor chime offers practical benefits, particularly for store management, security monitoring and property protection. These include:
3.1. Improved Security and Property Protection
A wireless visitor chime helps detect intruders or people entering without authorization, helping protect property and reduce the risk of theft. The device can operate both day and night, giving homeowners and businesses greater peace of mind.
3.2. Lower Installation and Maintenance Costs
Compared with more complex security monitoring systems, a wireless visitor chime costs less and is easy to install without changing existing infrastructure. It also has low maintenance costs and does not require a professional technician to operate it.3.3. Flexible Use
With the ability to wireless connectivity and pass through obstacles. The wireless visitor chime can be installed in different locations regardless of the layout or design of the space. Users can also move the device when needed without changing the entire system.3.4. Better Customer Experience
In stores, offices and clinics, a wireless visitor chime helps staff greet and assist customers promptly, creating a good impression and improving their experience. Customers feel more attended to and respected when they do not have to wait long.
3.5. Easy Integration with Other Devices
The wireless visitor chime can integrate with various other devices . Such as security cameras, alarm systems or smart home control systems. This helps create a coordinated security system and improves monitoring and protection.4. Installation and Use of the Wireless Visitor Chime
Installing the wireless visitor chime is straightforward and requires few tools. Choose suitable locations for the sensor and chime. Ensuring they are within radio signal range. Then follow a few simple steps to pair them before use. You should also check and replace the devices’ batteries regularly to keep them operating properly and avoid interruptions caused by depleted batteries.- Technical specifications of the i287D
5. Conclusion
The wireless visitor chime is a convenient and effective solution for welcoming customers and protecting property. With features such as infrared sensing, wireless connectivity and support for multiple sensors, it offers users many benefits. The device is suitable for a range of settings, from homes and offices to stores and hospitals. If you are looking for a convenient security solution for your space, the wireless visitor chime is an excellent choice for helping protect property while improving work efficiency and service quality.- Find more useful product information
- Watch a video of the product here
WHY CHOOSE KAWASAN?
- A Leading Vietnamese Brand in the fields of automatic electrical equipment, security, safety, and smart electrical devices since 2007, as well as residential LED lighting and solar lighting since 2012.
- High durability with selected components– Stable operation even in harsh weather conditions
- Superior Warranty Policy– Repair support is available even after the warranty period if the product can still be restored
- Kawasan currently has its head office in Ho Chi Minh City, branches in Hanoi and Da Nang, and a production and assembly workshop in District 12, Ho Chi Minh City.
- 24/7 Support Service, with a nationwide dealer network
Kawasan Commitment
Kawasan is committed to providing products genuine – durable – safe, fully meeting all technical standards and practical usage requirements. All products are covered by warranty free of charge for 24 months, with 1-for-1 replacement within 30 days for technical defects. In addition, customers are also supported with repair services after the warranty period if the product can still be restored, free of charge if the cost of replacement components is insignificant. Customers can purchase products at authorized dealers within NATIONWIDE DISTRIBUTION SYSTEM in provinces and cities nationwide, or place orders directly on the website. Buy genuine products at:- Contact the Sales Department directly for wholesale prices, dealer / distributor prices: 0825 411 408 / 0911 757 234
- Website: kawasan.vn (For Kawasan products)
- Website: kawaled.com.vn (For Kawaled products)
-
- Watch videos introducing the product, its applications, and instructions for use:
- Product introduction video: Giới Thiệu | CẢM ỨNG BÁO KHÁCH – BÁO ĐỘNG KHÔNG DÂY KAWASAN | Model I287D
- Video hướng dẫn sử dụng: Hướng Dẫn Sử Dụng | CẢM ỨNG BÁO KHÁCH – BÁO ĐỘNG KHÔNG DÂY KAWASAN | Model I287D
- Video tình huống ứng dụng khác: Cảm Ứng Báo Khách – Báo Động – Âm Báo Tiếng Việt | KAWASAN | Model: I287D
- Watch videos introducing the product, its applications, and instructions for use:

Technical specifications of the i287D
Infrared Sensor Power Supply: 2 × AAA batteries
Or 5V / 1A micro USB adapter
Chime Transmitter Power Supply: 90–230VAC
Wireless Frequency: RF433MHz
4 Volume Levels: 80dB with flashing LED indicator
Sensor-to-Chime Detection Range: 30–100m, depending on obstacles and environment
32 chime melodies and alarm tones
Detection Angle: 120°
Detection Range: 2–3m (>35°C), 7m (<32°C)
Supports adding up to 4 sensors to 1 chime
One sensor can connect to multiple chimes
- Description
- Reviews (2)
Description
Wireless Visitor Chime: An Effective Solution for Businesses and Homes
Nội Dung Bài Viết
ToggleWireless visitor detection technology has become a smart, convenient solution for many modern homes and businesses. This product helps welcome visitors while improving security and protecting property from unauthorized intruders. Let’s take a closer look at the wireless visitor chime, how it works, its practical applications and the benefits it offers.

1. Introduction to the Wireless Visitor Chime
A wireless visitor chime is a modern device that uses infrared sensor and wireless connectivity để phát hiện chuyển động của người trong khu vực giám sát. Khi có người di chuyển qua khu vực được cài đặt, cảm biến sẽ gửi tín hiệu tới chuông báo, giúp người dùng nhận biết sự xuất hiện của khách hoặc các đối tượng khác. Điều này giúp người dùng nhanh chóng phản hồi và có hành động kịp thời.
Sản phẩm này đặc biệt hữu ích tại các cửa hàng, văn phòng, bệnh viện, và các hộ gia đình có nhu cầu tăng cường bảo vệ và đảm bảo an toàn. Cảm biến hồng ngoại của thiết bị có khả năng nhận diện chuyển động với độ nhạy cao. Hoạt động trong nhiều điều kiện ánh sáng khác nhau.

Infrared Sensor Technology
The infrared sensor uses infrared radiation to detect changes in temperature and movement within the monitored area. When a person or animal passes through, the sensor detects the change and activates the chime. This technology provides accurate motion detection over a wide area and is unaffected by environmental factors such as light or weather.
Wireless Radio Connection
A notable feature of this product is its use of radio waves for wireless communication between the sensor and the chime. Radio waves can pass through obstacles. allowing the device to operate even when the sensor and chime are in different rooms or do not have a direct line of sight. This provides greater flexibility and convenience during installation and use.
2. Applications of the Wireless Visitor Chime
A wireless visitor chime has many practical applications in daily life and business. The most common include:

2.1. Use in Stores, Offices and Clinics
Retail stores, offices and clinics often use wireless visitor chimes to detect when a customer or patient enters. When someone comes through the door, the chime sounds so staff can promptly greet and assist them. This creates a good impression on visitors and helps staff work more efficiently.
2.2. Security for Homes and Stores
An important application of the wireless visitor chime is helping protect property and maintain security. The device can detect an intruder at night or when an area is unattended. If it detects unusual movement, the chime sounds, allowing users to respond promptly and help prevent dangerous situations.
2.3. Monitoring Areas with Security Cameras
In areas equipped with security cameras, the wireless visitor chime can also alert users when someone appears near an entrance. This allows the person monitoring the area to check the camera promptly, assess the situation and decide how to respond. The device is particularly useful in large office buildings, warehouses and other places requiring close security monitoring.
2.4. Flexible Use at Multiple Entrances
With the ability to connect multiple sensors to one chime or connect one sensor to multiple chimes. The product can monitor several areas at once without requiring too many devices. This saves costs and improves monitoring in places with multiple entrances or large spaces.
3. Benefits of the Wireless Visitor Chime
Using a wireless visitor chime offers practical benefits, particularly for store management, security monitoring and property protection. These include:

3.1. Improved Security and Property Protection
A wireless visitor chime helps detect intruders or people entering without authorization, helping protect property and reduce the risk of theft. The device can operate both day and night, giving homeowners and businesses greater peace of mind.

3.2. Lower Installation and Maintenance Costs
Compared with more complex security monitoring systems, a wireless visitor chime costs less and is easy to install without changing existing infrastructure. It also has low maintenance costs and does not require a professional technician to operate it.
3.3. Flexible Use
With the ability to wireless connectivity and pass through obstacles. The wireless visitor chime can be installed in different locations regardless of the layout or design of the space. Users can also move the device when needed without changing the entire system.
3.4. Better Customer Experience
In stores, offices and clinics, a wireless visitor chime helps staff greet and assist customers promptly, creating a good impression and improving their experience. Customers feel more attended to and respected when they do not have to wait long.

3.5. Easy Integration with Other Devices
The wireless visitor chime can integrate with various other devices . Such as security cameras, alarm systems or smart home control systems. This helps create a coordinated security system and improves monitoring and protection.
4. Installation and Use of the Wireless Visitor Chime
Installing the wireless visitor chime is straightforward and requires few tools. Choose suitable locations for the sensor and chime. Đảm bảo các thiết bị nằm trong tầm hoạt động của sóng radio. Sau đó, chỉ cần thực hiện một vài bước đơn giản để đồng bộ giữa cảm ứng và chuông là bạn đã có thể sử dụng ngay.
Ngoài ra, bạn cũng nên thường xuyên kiểm tra và thay pin cho các thiết bị. Để đảm bảo chúng luôn hoạt động tốt và không gặp sự cố do hết năng lượng.
- Technical specifications of the i287D
Infrared Sensor Power Supply: 2 × AAA batteries
Or 5V / 1A micro USB adapter
Chime Transmitter Power Supply: 90–230VAC
Wireless Frequency: RF433MHz
4 Volume Levels: 80dB with flashing LED indicator
Sensor-to-Chime Detection Range: 30–100m, depending on obstacles and environment
32 chime melodies and alarm tones
Detection Angle: 120°
– khoảng cách cảm ứng từ 2-3m (nhiệt độ >35độ C), 7m (nhiệt độ <32độ C).
Supports adding up to 4 sensors to 1 chime
One sensor can connect to multiple chimes
5. Conclusion
Cảm ứng báo khách không dây là một giải pháp tiện ích và hiệu quả trong việc đón tiếp khách hàng và bảo vệ tài sản. Với nhiều tính năng hiện đại như cảm ứng hồng ngoại, kết nối không dây và khả năng tích hợp nhiều đầu cảm ứng. Sản phẩm này mang lại rất nhiều lợi ích cho người sử dụng. Đặc biệt, thiết bị này phù hợp cho nhiều môi trường khác nhau từ gia đình, văn phòng đến cửa hàng và bệnh viện.
Nếu bạn đang tìm kiếm một giải pháp an ninh và tiện lợi cho không gian của mình. Cảm ứng báo khách không dây chính là lựa chọn hoàn hảo giúp bạn vừa bảo vệ tài sản. Vừa nâng cao hiệu quả công việc và chất lượng dịch vụ.
- Find more useful product information
- Watch a video of the product here
WHY CHOOSE KAWASAN?
- A Leading Vietnamese Brand in the fields of automatic electrical equipment, security, safety, and smart electrical devices since 2007, as well as residential LED lighting and solar lighting since 2012.
- High durability with selected components– Stable operation even in harsh weather conditions
- Superior Warranty Policy– Repair support is available even after the warranty period if the product can still be restored
- Kawasan currently has its head office in Ho Chi Minh City, branches in Hanoi and Da Nang, and a production and assembly workshop in District 12, Ho Chi Minh City.
- 24/7 Support Service, with a nationwide dealer network
Kawasan Commitment
Kawasan is committed to providing products genuine – durable – safe, fully meeting technical standards and practical usage requirements.
All products are covered by warranty free of charge for 24 months, with 1-for-1 replacement within 30 days for technical defects. In addition, customers are also supported with repair services after the warranty period if the product can still be restored, free of charge if the cost of replacement components is insignificant.
Customers can purchase products at authorized dealers within NATIONWIDE DISTRIBUTION SYSTEM in provinces and cities nationwide, or place orders directly on the website.
Buy genuine products at:
- Contact the Sales Department directly for wholesale prices, dealer / distributor prices: 0825 411 408 / 0911 757 234
- Website: kawasan.vn (For Kawasan products)
- Website: kawaled.com.vn (For Kawaled products)
Reference Articles and Videos on Applications, Benefits, and User Instructions
-
- Watch videos introducing the product, its applications, and instructions for use:
- Product introduction video: Giới Thiệu | CẢM ỨNG BÁO KHÁCH – BÁO ĐỘNG KHÔNG DÂY KAWASAN | Model I287D
- Video hướng dẫn sử dụng: Hướng Dẫn Sử Dụng | CẢM ỨNG BÁO KHÁCH – BÁO ĐỘNG KHÔNG DÂY KAWASAN | Model I287D
- Video tình huống ứng dụng khác: Cảm Ứng Báo Khách – Báo Động – Âm Báo Tiếng Việt | KAWASAN | Model: I287D
- Watch videos introducing the product, its applications, and instructions for use:
2 reviews for CẢM ỨNG BÁO KHÁCH – BÁO ĐỘNG KHÔNG DÂY (Tiếng Việt) MODEL I287D
Add a review Cancel reply
- Description
- Reviews (2)
Description
Wireless Visitor Chime: An Effective Solution for Businesses and Homes
Nội Dung Bài Viết
ToggleWireless visitor detection technology has become a smart, convenient solution for many modern homes and businesses. This product helps welcome visitors while improving security and protecting property from unauthorized intruders. Let’s take a closer look at the wireless visitor chime, how it works, its practical applications and the benefits it offers.

1. Introduction to the Wireless Visitor Chime
A wireless visitor chime is a modern device that uses infrared sensor and wireless connectivity để phát hiện chuyển động của người trong khu vực giám sát. Khi có người di chuyển qua khu vực được cài đặt, cảm biến sẽ gửi tín hiệu tới chuông báo, giúp người dùng nhận biết sự xuất hiện của khách hoặc các đối tượng khác. Điều này giúp người dùng nhanh chóng phản hồi và có hành động kịp thời.
Sản phẩm này đặc biệt hữu ích tại các cửa hàng, văn phòng, bệnh viện, và các hộ gia đình có nhu cầu tăng cường bảo vệ và đảm bảo an toàn. Cảm biến hồng ngoại của thiết bị có khả năng nhận diện chuyển động với độ nhạy cao. Hoạt động trong nhiều điều kiện ánh sáng khác nhau.

Infrared Sensor Technology
The infrared sensor uses infrared radiation to detect changes in temperature and movement within the monitored area. When a person or animal passes through, the sensor detects the change and activates the chime. This technology provides accurate motion detection over a wide area and is unaffected by environmental factors such as light or weather.
Wireless Radio Connection
A notable feature of this product is its use of radio waves for wireless communication between the sensor and the chime. Radio waves can pass through obstacles. allowing the device to operate even when the sensor and chime are in different rooms or do not have a direct line of sight. This provides greater flexibility and convenience during installation and use.
2. Applications of the Wireless Visitor Chime
A wireless visitor chime has many practical applications in daily life and business. The most common include:

2.1. Use in Stores, Offices and Clinics
Retail stores, offices and clinics often use wireless visitor chimes to detect when a customer or patient enters. When someone comes through the door, the chime sounds so staff can promptly greet and assist them. This creates a good impression on visitors and helps staff work more efficiently.
2.2. Security for Homes and Stores
An important application of the wireless visitor chime is helping protect property and maintain security. The device can detect an intruder at night or when an area is unattended. If it detects unusual movement, the chime sounds, allowing users to respond promptly and help prevent dangerous situations.
2.3. Monitoring Areas with Security Cameras
In areas equipped with security cameras, the wireless visitor chime can also alert users when someone appears near an entrance. This allows the person monitoring the area to check the camera promptly, assess the situation and decide how to respond. The device is particularly useful in large office buildings, warehouses and other places requiring close security monitoring.
2.4. Flexible Use at Multiple Entrances
With the ability to connect multiple sensors to one chime or connect one sensor to multiple chimes. The product can monitor several areas at once without requiring too many devices. This saves costs and improves monitoring in places with multiple entrances or large spaces.
3. Benefits of the Wireless Visitor Chime
Using a wireless visitor chime offers practical benefits, particularly for store management, security monitoring and property protection. These include:

3.1. Improved Security and Property Protection
A wireless visitor chime helps detect intruders or people entering without authorization, helping protect property and reduce the risk of theft. The device can operate both day and night, giving homeowners and businesses greater peace of mind.

3.2. Lower Installation and Maintenance Costs
Compared with more complex security monitoring systems, a wireless visitor chime costs less and is easy to install without changing existing infrastructure. It also has low maintenance costs and does not require a professional technician to operate it.
3.3. Flexible Use
With the ability to wireless connectivity and pass through obstacles. The wireless visitor chime can be installed in different locations regardless of the layout or design of the space. Users can also move the device when needed without changing the entire system.
3.4. Better Customer Experience
In stores, offices and clinics, a wireless visitor chime helps staff greet and assist customers promptly, creating a good impression and improving their experience. Customers feel more attended to and respected when they do not have to wait long.

3.5. Easy Integration with Other Devices
The wireless visitor chime can integrate with various other devices . Such as security cameras, alarm systems or smart home control systems. This helps create a coordinated security system and improves monitoring and protection.
4. Installation and Use of the Wireless Visitor Chime
Installing the wireless visitor chime is straightforward and requires few tools. Choose suitable locations for the sensor and chime. Đảm bảo các thiết bị nằm trong tầm hoạt động của sóng radio. Sau đó, chỉ cần thực hiện một vài bước đơn giản để đồng bộ giữa cảm ứng và chuông là bạn đã có thể sử dụng ngay.
Ngoài ra, bạn cũng nên thường xuyên kiểm tra và thay pin cho các thiết bị. Để đảm bảo chúng luôn hoạt động tốt và không gặp sự cố do hết năng lượng.
- Technical specifications of the i287D
Infrared Sensor Power Supply: 2 × AAA batteries
Or 5V / 1A micro USB adapter
Chime Transmitter Power Supply: 90–230VAC
Wireless Frequency: RF433MHz
4 Volume Levels: 80dB with flashing LED indicator
Sensor-to-Chime Detection Range: 30–100m, depending on obstacles and environment
32 chime melodies and alarm tones
Detection Angle: 120°
– khoảng cách cảm ứng từ 2-3m (nhiệt độ >35độ C), 7m (nhiệt độ <32độ C).
Supports adding up to 4 sensors to 1 chime
One sensor can connect to multiple chimes
5. Conclusion
Cảm ứng báo khách không dây là một giải pháp tiện ích và hiệu quả trong việc đón tiếp khách hàng và bảo vệ tài sản. Với nhiều tính năng hiện đại như cảm ứng hồng ngoại, kết nối không dây và khả năng tích hợp nhiều đầu cảm ứng. Sản phẩm này mang lại rất nhiều lợi ích cho người sử dụng. Đặc biệt, thiết bị này phù hợp cho nhiều môi trường khác nhau từ gia đình, văn phòng đến cửa hàng và bệnh viện.
Nếu bạn đang tìm kiếm một giải pháp an ninh và tiện lợi cho không gian của mình. Cảm ứng báo khách không dây chính là lựa chọn hoàn hảo giúp bạn vừa bảo vệ tài sản. Vừa nâng cao hiệu quả công việc và chất lượng dịch vụ.
- Find more useful product information
- Watch a video of the product here
WHY CHOOSE KAWASAN?
- A Leading Vietnamese Brand in the fields of automatic electrical equipment, security, safety, and smart electrical devices since 2007, as well as residential LED lighting and solar lighting since 2012.
- High durability with selected components– Stable operation even in harsh weather conditions
- Superior Warranty Policy– Repair support is available even after the warranty period if the product can still be restored
- Kawasan currently has its head office in Ho Chi Minh City, branches in Hanoi and Da Nang, and a production and assembly workshop in District 12, Ho Chi Minh City.
- 24/7 Support Service, with a nationwide dealer network
Kawasan Commitment
Kawasan is committed to providing products genuine – durable – safe, fully meeting technical standards and practical usage requirements.
All products are covered by warranty free of charge for 24 months, with 1-for-1 replacement within 30 days for technical defects. In addition, customers are also supported with repair services after the warranty period if the product can still be restored, free of charge if the cost of replacement components is insignificant.
Customers can purchase products at authorized dealers within NATIONWIDE DISTRIBUTION SYSTEM in provinces and cities nationwide, or place orders directly on the website.
Buy genuine products at:
- Contact the Sales Department directly for wholesale prices, dealer / distributor prices: 0825 411 408 / 0911 757 234
- Website: kawasan.vn (For Kawasan products)
- Website: kawaled.com.vn (For Kawaled products)
Reference Articles and Videos on Applications, Benefits, and User Instructions
-
- Watch videos introducing the product, its applications, and instructions for use:
- Product introduction video: Giới Thiệu | CẢM ỨNG BÁO KHÁCH – BÁO ĐỘNG KHÔNG DÂY KAWASAN | Model I287D
- Video hướng dẫn sử dụng: Hướng Dẫn Sử Dụng | CẢM ỨNG BÁO KHÁCH – BÁO ĐỘNG KHÔNG DÂY KAWASAN | Model I287D
- Video tình huống ứng dụng khác: Cảm Ứng Báo Khách – Báo Động – Âm Báo Tiếng Việt | KAWASAN | Model: I287D
- Watch videos introducing the product, its applications, and instructions for use:
2 reviews for CẢM ỨNG BÁO KHÁCH – BÁO ĐỘNG KHÔNG DÂY (Tiếng Việt) MODEL I287D
-
5 out of 5
Thanh Hào –
Đèn led nháy nhìn dễ biết hơn, nhất là lúc quán đông người.
-
5 out of 5
Ngọc Diễm –
I287D cảm ứng khá nhạy, khách vừa đi vào khu vực là có thông báo ngay















Thanh Hào –
Đèn led nháy nhìn dễ biết hơn, nhất là lúc quán đông người.
Ngọc Diễm –
I287D cảm ứng khá nhạy, khách vừa đi vào khu vực là có thông báo ngay