1. Adopt HR202 Humidity Sensor; 2. The Comparator Output Directly Drives The Relay And Is Connected To 220V AC Or Other Equipment; 3. The Distribution Potentiometer Adjusts The Temperature Detection Threshold; 4. The Sensor Connection Can Be Equipped With Pin Headers And Lead Wires For Humidity Sensors; 5. The Overall Dimensions Of The Circuit Board Are: 50x26mm, With 4 Fixing Holes; Humidity Detection, Humidity Sensor, Environmental Humidity Detection, With Relay Output, Which Can Directly Control The Power Supply Of Related Equipment. Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use Supply Voltage: (Default 5V) Current: 150MA Load: AC 250V 10A Or DC 30V 10A, This Power Can Be Used Colour:As Shown Material:PCB Package Contents: 1x Humidity Switch Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.