Wireless transmitter and receiver for car camera /lcd screen

SECTION FOR 2.4GHz TRANSMITTER    
1.Transmission Frequency(F1\F2\F3\F4)
MHz: ISM  2414\2432\2450\2468 0.25 +/-
2.Received Sensitivity   dBm: -90 -88
3. S/N Ratio   dB: 38
4. Unobstructed Effective Range   Meter: 70 40
5. Transmitter Power   dBm: 13
6. Operation Current (Transmitter/Receiver)   mA: 115 / 80