Specification Brand : Aexit BulletPoint1 : Product Name : Humidity Sensor + Relay Module;Material : Plastic, Electronic Parts BulletPoint2 : Coil Voltage : DC 5V;Contact Capacity : 10A, AC 250V/125V, DC 30V/28V BulletPoint3 : Sensor Size : 15.5 x 13.5 x 7mm/0.61" x 0.53" x 0.27"(L*W*T);Cable Length : 20.5cm/8.1" BulletPoint4 : Fixing Hole Dia : 3mm/0.12";Relay Module Size : 50.5 x 26 x 17.5mm/2.0" x 1.0" x 0.69"(L*W*H) BulletPoint5 : Weight : 20g;Package Content : 1 x Humidity Sensor + Relay Module Color : White CompatibleWithVehicleType : ATV CurrentRating : 10 amps ExternallyAssignedProductIdentifier : 8233639970174 ExternallyAssignedProductIdentifier1 : 710382584271 ExternallyAssignedProductIdentifier2 : 0710382584271 ExternallyAssignedProductIdentifier3 : 00710382584271 ItemName : Aexit DC5V 1 Electrical Channel LED Vibration Detection Sensor + Outlets Relay Module ItemPackageDimensions_Height : 25.908 centimeters ItemPackageDimensions_Length : 11.684 centimeters ItemPackageDimensions_Width : 25.146 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : humidifier-accessories ItemTypeName : Treatscrambler Treat Dispenser Manufacturer : Aexit Material : Metal,Plastic,Electronic Parts MaximumSwitchingCurrent : 10 amps MeasurementSystem1 : Imperial MeasurementSystem2 : Metric ModelName : GOSHV26 ModelNumber : modle NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : f190413ae105332 ProductDescription : The VCC external 3.3-5V voltage, GND with an external GND, DO small board digital output interfaces (0 and 1), AO small board analog output interface. Comparator chip LM393 ,it is stable. This module usually used for detecting the vibration intensity. When vibration intensity can not the value,DO output is high level.When vibration intensity over than the value, the module DO output is low level.