Features 1) 2.4GHz, 2.5” LCD screen, 380TV lines sharp picture display; 2) Tiny size of receiver for mobile usage 3) 4 Channels selection to minimize interference. 4) Camera built in microphone and speaker in receiver for audio monitoring. 5) Rechargeable Li-battery in receiver which can work 2 hours continuously. 6) Approx 100m transmission distance without block. 7) Brightness adjustment; 8) Moving detection mode alarm 9) Frequency for the 4 channel is 2414 MHz, 2432 MHz, 2450 MHz, 2468Mhz. but can design for customer especially in range of 2400 MHz to 2483 MHz.
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