Water Sensor is an easy-to-use, cost-effective water level/drop detection sensor. Working voltage: DC3-5V; Operating current: less than 20 mA. The water level is determined by measuring the droplet/water volume with a series of exposed parallel wire tracks. Water Sensor is widely used in HVAC, dehumidifier, testing instrument, automobile, automatic control, weather station, humidity regulator and other related temperature detection and control. Product name: water level sensor. Operating voltage :DC3-5V. Operating current: less than 20mA. Sensor type: Analog. Detection area :40mmx16mm Production process :FR4 double-sided tin spray Working temperature :10C-30C. Operating humidity :10%-90% without condensation. Product size :62mmx20mmx8mm..Items from Sheng Xinshun's shop