5V - 12V temperature controller, high, medium and low 3 adjustable. With 30 minutes delay off function. Mainly used for 5V USB electric heater. Thermostat can also be used for 7.4V electric clothing . Long press 3 seconds flashing light is a delay of 30 minutes into the function. Power: 24W Current: 2A Power: 5V Temperature controller temperature range: 45 degree Colour:black Material:plastic Size:Line: Length: 45cm Package Contents: 1 x Temperature Controller Only the above package content, other products are not included. Note: Light shooting 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.