Version 4W VTX, high power, sufficient power, using two RFPA5542 amplifiers, using RF power dividers to connect the two amplifiers in parallel, the theoretical power can reach 4W, due to the power loss of the power divider, it is impossible to reach 4 watts in reality, the actual power is 3.3-3.5 watts. Channel table, refer to 2.5 watts for usage. Do not open the maximum power for long-term debugging on the ground, long-term high temperature operation increases the probability of burning, the ground overheat for about three minutes to shut down the amplifier, foam model, do not place the machine inside the sealed cabin, with a cover rate overheating protection during flight. Novices please do not buy, the greater the power, the easier it is to burn if the operation is careless. Connect the antenna and then power on, the power is the minimum, you need to manually press the button to increase the power, if you need to automatically set the power when you turn on the machine, you need to set the osd parameter interface automatically! Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. The color and appearance of accessories are random, cannot be specified, and not affect use. Colour:Black Material:PCB Package Contents: 1 * VTX Kit 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.