Features: 100% brand new and high quality 5V 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 . The USB plug and extension cord design is simple, convenient and safe. Package Includes: 1x Temperature Controller Specifications: Material: ABS Cable Length: Approx. 1.5m/59.05inch Switch Adjustment: High, Medium, Low (three Gears) Line Interface: USB to 3.5DC Head One for Two Applicable Voltage: 5V note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.