Mini Wireless Color Spy Camera 2.4GHz (Set of 4 Remote)

This set includes:
4 2.4GHz Wireless cameras
1 2.4GHz digital receiver
1 Remote control for receiver
1 Power adapter for receiver
1 Power adapter for a camera
4 Battery clips for cameras
1 Video RCA cable
1 Operation manual

The receiver has wireless infrared remote control selection for each
channel and can either display one camera channel at a time or cycle
through all 4 cameras at an interval that you choose (from 0.5 to 35 seconds).

Features: 
1) Transmission/receiving frequency: 
    a) CH1: 2,414MHz
    b) CH2: 2,432MHz
    c) CH3: 2,450MHz
    d) CH4: 2,468MHz
2) Transmission power: (TX2400) 25mW
3) Valid distance: 30-50m
4) Horizontal definition: 380 Lines
5) Frequency system: NTSC (510 x 492)
6) Power adapter: 
    a) RC420A: DC12V/500mA
    b) 203C: DC8V/200mA