YASONG SLA-01K 120dB Contact Signal Industrial Alarm Siren, 25W, IP65, LED Strobe, AC/DC Voltage Options Accessories & Specialized Devices This model works by motion

This model works by motion detection trigger: after wiring and power-on

and reversed polarity may damage the warning light

recording mode and speech mode

4ft power cord for flexible rooftop placement

The alarm uses 3 AAA alkaline batteries

YASONG SLA-01K 120dB Contact Signal Industrial Alarm Siren, 25W, IP65, LED Strobe, AC/DC Voltage Options Accessories & Specialized Devices This model works by motionThe YASONG SLA 01K dry contact signal alarm siren is designed for security systems, access control systems, sensors, motion detectors, PLC related warning points and industrial alarm outputs. This model is triggered by an external voltage free dry contact signal. When a connected device sends a switching signal, the siren activates a 120dB audible alarm and LED strobe light for clear sound and visual warning. Dry contact signal trigger for external