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Description:Product Name: Wireless Surveillance EquipmentModel Number: SD-690D4+SD-680R3Place of Origin: ChinaSD-690D4 specifications: 1) Camera: CMOS 2) Wide angle: 78o 3) Total pixel no.: 537 x 505 (V x H), 270000 pixels 4) Scan frequency: 15.625kHz, 50Hz 5) Horizontal resolution:>420 TV lines 6) Min. illumination: 0.51Lux 7) Video output: 1.0Vp-p / 75 Ohm 8) Auto electronic shutter: 1/60 - 1/100,00 9) Launching frequency: 2.4GHz (4ch) 10) Signal modulation: FM 11) Frequency output: 90dBu / V, 3M 12) Antenna: gain-oriented antenna 13) Operation temp.: -20 ~ 90o 14) Power: DC 12C, 500Ma, AC adaptor 15) Weight: 300g SD-680R3 specifications: 1) Receiving frequency: 2.4GHz (4ch) 2) Output: a) Video: 1.5Vp-v / 75 Ohm b) Audio: 1.35Vp-p 3) Sensitivity: 25 - 80dBm 4) Antenna: gain-oriented antenna board 5) Resolution:>380 TV lines 6) Audio output: 0.25W 7) Power: DC 12V, 1.2A, AC adaptor 8) Operation temp.: -20 ~ 90o Inner packing:1pc/inner box Outer packing:4pcs/ctn Carton dimensions: 570 x 433 x 335mm N.W.: 15 kgs G.W.: 16 kgs