W2020 water immersion sensor is based on the principle of liquid conduction. It uses electrodes to detect the presence of water.It is then converted into a dry contact output by sensors. Combined with LoRaWAN\ nb-iot \GPRS to uploaded to the cloud platform through the gateway to realize remote local alarm and escort for safe home.
Standard export carton packing.
3-20 days after confirming order,detail delivery date should be decided according to production season and order quantity.