Sound and light alarm reminder, with a built-in buzzer in the module. When a leak occurs, it sound an alarm and an indicator light to remind the leak. It can promptly handle water immersion to prevent losses. Switch signal output, which can be connected to external devices such as sound and light alarms, automatic valves, intelligent alarms, etc., and integrated with various monitoring systems to achieve remote alarm and control of remote devices Sensitivity can be adjusted according to detection needs, with multiple levels of adjustment, ranging from detecting water droplet alarms to a wide range of different water immersion scenarios. Wide voltage input, 9-15VDC DC power supply connected to power adapter for use and more choices. Hign-concerned Chemical:None Usage:Water Alarm Module Type:Biosensor Colour:As Shown Material:ABS Package Contents: 1 * Module 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.