Four-frequency manual receiver with 320-line horizontal

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Open transmission distance 100m. Camera can output the audio and video signal synchronously. 2.5 Inch tft lcd sreen display the picture, tv system pal/ntsc automatically switch. 2.4G locked frequency transimitter and receiver. Can receive the wired audio and video signal of av(vcd). After aa lithium refreshed batteries, it could work continuously for above 2 hours. The battery of camera, which works for about 1 hour continuancely is 8v, the camera could be suitable in the special environment, china manufacturer specifications: specification: image sensor: 1/3 omnivision cmos, definition(dot): 480*234, (u/d/l/r)(cr>10): view angle>(u/d/l/r)(cr>10): 10/30/45/45, middle frequency: 480mhz, sensitivity: -80dbm, tv system: pal/ntsc change automatically, validity pixel: pal: 628*582 / ntsc: 510*492, battery: within 7.4V lithium battery, low voltage to turn off: when lithium battery lower than 6.5V it turns off automatically, horizontal definition: 320 line, visual angel: 40°/54°, the range of adjusted focus:0.1M, minimum illumination: 3lux/f1.2, Frequency: ch1: 2.414Mhz, ch2: 2.432Mhz, ch3: 2.450Mhz, ch4: 2.468Mhz, transmissionpower:20mw, open transmission distance: 100m, power: dc12v/1.5A, power consumation: =3w, size:123*72*24mm, weight:200g