Feature:

• Detects conventional alarm sound from existing security system, it transmits a signal to Control Panel (SC-001) or Emergency Dialer (AD-433) 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.
• Range up to 100ft.

Availability: Usually ships the next business day

Audio Sensor - AS-433
AS-433US $36.50