Humidity testing, humidity sensors, environment humidity testing, relay output, direct power control related equipmentThe module features:1, USES the high quality HR202 wet sensor;2, the comparator output direct drive relay, 220 v ac or other equipment;3, with potentiometer to adjust temperature detection threshold4, can hold row needles, sensor interface, add wet lead sensor;5, for PCB dimension: 50 x26mm, 19 mm thick, with four fixed bolt hole 3 mm, convenient installationElectrical parameters:Power supply voltage: 5 VDC (default: 5 v current is larger than 150 ma10 a maximum load: 250 v ac or 30 v dc 10 a, all can be used is less than the powerModule USES: