FPV 2.4G 500mW A/V Transmitting/receiving System
Transmitting unit weight: 34.5g
Power input: 12V ± 5%
Receiving current: 100mA
Transmitting current: 200mA
Channel number: 8-ch
Transmitting distance (air to ground): 1 to 2Km (for reference only, the distance may vary a lot depending on the environments)
Antenna gain: 3db
Video signal resistance: 75Ω
Antenna connector: RP-SMA  jack (module side, both RX and TX)   Refer to here for connector type diagram
Working frequency:

CH1/CH5: 2410/2370MHz
CH2/CH6: 2430/2390MHz
CH3/CH7: 2450/2490MHz
CH4/CH8: 2470/2510MHz

Includes:
1 x transmitting unit
1 x receiving unit
1 x basic wires

* No instruction manual supplied with this product.

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