Working frequency: 2.4GHz 2 groups of frequencies with 8 channels to choose from, easily avoiding interference frequencies: CH1 2414/2490MHz, CH2 2432/2510MHz, CH3 2450/2390MHz and CH4 2468/2370MHz Modulation mode: Broadband FM 1. Transmitter Module: Model: TX6733 Unit: piece Power: 2W Working voltage: 5V Current consumption: 600-800mA Dimensions: 45mm x 28mm x 10mm/1.8 x 1.1 x 0.4Inch Communication distance: 2000-3000 meters in open space 2. Receiver Module: Model: RX6788 Unit: Piece Working sensitivity: -93dBm Working voltage: 5V Current consumption: about 150mA Dimensions: 45mm x 30mm x 4.8mm/1.8 x 1.2 x 0.2Inch Built-in frequency phase-locked loop with high stability Low clutter leakage. Directly output audio and video signals Patch installation makes it convenient to use. Due to different product batches, the appearance may vary, which does not affect the use. Colour:As Shown Material:PC+Metal Package Contents: 1 x Transmitter module 1 x Receiver module 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.