If the 2 sensor connections on the module come into contact with water, the built-in relay switches on. This allows sirens and other cut-off relays to be controlled. Technical data Operating voltage 9 V/DC ideal (max. 12 V/DC), (please only use a stabilised power supply). Power consumption "Ready" < 10 mA Coming into contact with water, when the relay picks up < 90 mA at 9 V/DC LED displays 1 LED for the ready display "POWER", 1 LED for the "ON" display, when the relay switches on Connections via cable Approved cable length to the water sensors max. 5 m with conventional cable, max. 100 m with shielded cable, if the shielding mesh is connected to the negative terminal from the supply voltage Moulded module housing dimensions approx. 59 x 44 x 20 mm (without mounting brackets) https://elecena.pl/product/17894247/m158-water-sensor-9-12-v-dc 2021-04-27 https://elecena.pl/product/17894247/m158-water-sensor-9-12-v-dc 2022-02-01 https://elecena.pl/product/17894247/m158-water-sensor-9-12-v-dc 2023-04-02 https://elecena.pl/product/17894247/m158-water-sensor-9-12-v-dc 2025-01-23