3.7V to 15V power supply is universal with the same power output. Can control the power supply from 3.7V to 15V; enables remote control switch function, with a load capacity up to 30. Input voltage of the product: when the remote control is turned on, the output delivers the same voltage as input. The product is powered off by default. For example: When connected to a 5V power supply and the remote control is activated, the output is 5V. When connected to a 12V power supply and the remote control is activated, the output is 12V. Controller indicator: Press the "ON" button on the remote control the indicator light turns on and output is powered. Press the "OFF" button on the remote control the indicator light turns off and output is disconnected. [Connector model]: DC 5.5mm x 2.1mm [Module output]: MOS tube, no contact output, silent operation (controls positive terminal) [Product Frequency]: RF signal 433MHz [Module power consumption]: Approximately 6mA in standby, 6mA in operating state [Load capacity]: Up to 3A current, suitable for loads up to 30 [Coverage distance]: Up to approximately 30 meters [Coding type]: Learning code type, each code unique Shipped pre-coded; each set has an independent code to prevent interference. Receiver features learning function, supports configuration of multiple sets and adding additional remote controls. DC female jack: DC female: power input Input range: 3.7V to 15V power supply Color: black Material: plastic Size: Length: 210mm Package Contents: 1 x Receiver 1 x Remote control Only the above items included; other accessories not included. Note: Lighting and display differences may cause slight color variations between the image and actual item. Measurement tolerance is +/- 1-3 cm.