The AL21 – RM126B can operate independently or be integrated with an alarm control panelto provide an audible alarm. It can be paired with motion detectors, magnetic door sensors, gas detectors, smoke detectors, and the RM126 remote control.

Operating Principle of the Alarm Siren

Every alarm siren system, regardless of how complex its configuration may be, generally operates based on 3 main steps:

Devices That Can Be Integrated with The AL21 – RM126B

Sensors are installed at key locations to continuously monitor environmental conditions and detect abnormal events. Common types of sensors include:

• Motion sensors. Detect unauthorized intrusion by sensing abnormal movement within the monitored area.
• Door Opening Sensors. Detect when doors or windows are opened without authorization.
• Smoke Sensors and Temperature Sensors. Detect potential fire hazards based on smoke or a sudden increase in temperature.
• The Gas Leak Sensor- . Detects common combustible gases and activates an alarm when a hazardous gas leak is detected.

AL21 – RM126B

AL21 Wireless Siren:

• Wireless Frequency: RF433MHz
• Can be used independently or combined with wireless magnetic door sensors, detectors, remotes, smoke detectors, gas detectors, or control panels
• Transmission Distance: 30m with obstacles, 40m without obstacles
• Main Power Supply: AC 110–220V
• Built-in Rechargeable Backup Battery: 3.7V / 600mA, supports 6–8 hours during power failure
• Static Current: 100mAh
• Adjustable Alarm Volume: 8 levels
• Max Volume: 110dB
• Alarm Duration: 5 minutes, not adjustable"

​RM126B Remote:

• Frequency: 433MHz
• Receiving Distance from Control Panel: 20–50m
• Battery: 12VDC
• Remote Functions: Arm, Disarm, Emergency Alarm, When at home