Precautions: 1. Before turning on the power, you must make sure that an antenna has been plugged in, otherwise the components be ! 2. While in operation, VTX may generate high temperatures.Please do not touch it directly with your hands to avoid . 3. There should be space at the image transmission installation location to air convection around the module and proper heat dissipation of the module. 4. When using this product, please comply with local radio laws and regulations and use locally allowed channel frequencies. 5. Before turning on the power, make sure the voltage range is 7-36V and the positive and negative poles are correct to avoid damaging the components. Specifications: Input Voltage: DC 7-36V(2-8S) Power Consumption: 120-860mA(12V/25mw-2500mW) Operating temperature: -10~60℃ Impedance: 75Ω Connector: MMCX Format: NTSC/PAL Protocol: IRC Tramp Mounting: 25.5x25.5mm/M2 Power Output: 25mW/400mW/800mW/1600mW/2500mW/Pit Built-in microphone note: Use high-quality antennas to effective output of image transmission performance. If the image transmitter is in a static state for a long time after being powered on, set the power to the minimum to avoid overheating Material: plastic+metal colour: Black Package Contents: 1 x VTX Transmitter Only the above package content, other products are not included. Note: Light reflection 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.