4 Channels available in both the camera & monitor to avoid possible interference.  Channel Scan in the monitor that supports scanning up to 4 cameras (one by one per 5 seconds).  Tiny size camera with built-in Rechargeable Li-battery inside for discreet observation & portability.  Built-in microphone in camera and speaker in monitor for monitoring.  300ft transmission range in open space.  AV output, connect directly to TV. Power Supply included.

Specifications for Camera:  Imaging Sensor: CMOS.  CMOS Pixels: 629x582(PAL);510x492(NTSC) Horizontal Resolution: 380 TV Lines.  View Angle: 60 degrees.  Frequency: 2,400-2,483 MHz.  FM Modulation.  Bandwidth: 18 MHz.  Power Supply +5VDC, Lithium Battery. 

Specifications for Monitor: LCD Size 2.5" TFT.  Resolution: 480x234.  Intermediate Frequency: 480MHz.  FM Modulation.  Power Supply +5VDC.

4 Camera's cam be attached.  Camera's listed below. 

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Product SKU: SUZBM830E