Taidacent 2way 12V Humidity Sensor Switch HR202 Humidity Sensor Module with Relay Output Humidity Switch Relay Module

use: Humidity detection, humidity sensor, environmental humidity detection, with relay output, direct control of related equipment power supply, 2-way relay output, can be connected to 220V high-current equipment appliances. Module features: 1, 12V power input for relay use, onboard 78L05 regulator triode, provide sensor comparator, make the product more stable and reliable; 2, using high quality HR202 humidity sensor; 3. The comparator output directly drives the relay to connect 220V AC or other equipment; 4, with potentiometer to adjust the temperature detection threshold 5, the sensor interface can be equipped with a pin, plus a wet sensor with a lead; 6, the circuit board dimensions are: 60x43mm, thickness 19mm Module instructions: 1. The humidity sensor is most sensitive to environmental humidity and is generally used to detect the humidity of the surrounding environment; 2. When the ambient humidity exceeds the set threshold, the relay is closed, and the common end is connected to the normally open end. When the ambient humidity is lower than the set threshold, the relay is disconnected, and the common end is connected to the normally closed end; 3, the common end, normally open, normally closed three ports is equivalent to a dual control switch, when the relay coil is powered, the common end is open to the normally open end, when there is no electricity, the common end and the normally closed end are turned on;