The SecurityMan Add-On Wireless Doorbell Button for Air-Alarm II offers a wireless transmitting distance of up to 300 ft. It is fully compatible with Air-AlarmII/IIB.

• Wireless transmitting distance up to 300ft
• Internal rechargeable battery lasts up to 3 years
• 2 LED indicators for doorbell button on & low-battery indication

Wireless transmitting distance up to 300ftWorldBrand