Features: 1. Developed and designed for wireless charging and power supply of various current small electronic products. It has the characteristics of small size, easy use, and high efficiency. 2. Mainly suitable for mobile electronic products such as game consoles, MP3, MP4, digital cameras, electric shavers, learning machines, and other portable devices. 3. Due to the use of contactless charging and power supply, the product can be completely sealed, waterproof, and dustproof. 4. Increases the service life of the product and makes it more convenient to use. 5. If the current is small, the number of turns of the receiving coil can be appropriately increased to extend the transmission distance. Specifications: - Transmitter module size: About 17x11x2.3mm - Transmitter-receiver coil size: About 40x1.8mm - Connection mode: 1 pin connects to power negative; 2 pins connect to power positive; 3 and 4 pins connect to external transmitting coil. - Transmitter module working voltage: 5V~12V - Transmitter module working current: Automatically increases or decreases with the size of receiving load current. - Output current of receiver module: 5V/1000mA - Transmission/reception distance: 1~20mm - Set: 5V2A - Material: PCB - Color: As shown Package Contents: 1 x Transmitter Module 1 x Receiver Module Note: Only the above package content is included; other products are not included. Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The measurement allowed error is +/- 1-3cm.