SkyLink AS-433E Alarm Sensor Wireless Home Security Alarm System

Detects conventional alarm sound from existing security system, it transmits a signal to Control Panel (SC-001) or Emergency Dialer (AD-433S) which then activate the system. Can stand alone, or used in conjunction with the Skylink system. Can be connected with other security systems using N/C connector. 9V Alkaline battery included. AC adapter (sold separately). Range up to 100ft.