-USB2.0 support connect PC, a single synchronous recording or four camera signals
-2.4GHz Wireless receiver & QUAD SYSTEM
-4-Channel receiving at the same time
-Four pictures, two pictures, single pictures
-PIP(picture in picture) automatic inverting mode
-High performance picture frozen function High performance picture amplifying function
Specification:
-System: PAL/NTSC
-Receiving Frequency: CHl:2414MHz,CH2:2432MHz CH3:2450MHz,CH4:2468MHz
-Power Supply: 12V 1.2A
-Current Consumption: 700mA
-Receiving Sensitivity: -88dBm
-Antenna Input Impedance: 75 ohm
-Video Output Level: lVp-p
-Audio Output Level: lVp-p
-Image Resolution : 720X76(PAL)  720X80(NTSC)
-Image Refresh Rate: 60Hz/second(NTSC)50Hz/second(PAL)
-Video Output Type Single picture, two picture, PIP,POP or four picture can be displayed and switched automatically -Ambient Temperature -30 ~ +60 degree