... 2. 18pcs IR LED, viewing distance 5M; 3. 2.8/3.6mm board lens; 4. metal casing with ... BalanceAutoElectronic Shutter1/50-1/100,000secLens2.8/3.6mmS/N Ratio>48dBGamma Correction>0.45Operation ... 5Viewing Distance5MWaterproof Rate---- Solutions we offer:Sony CCD: 1/3" 420TVL, 480TVL, 540TVL, 600TVL, 700TVL EFFIO-E ... chip. Better quality, longer usage life; 3. Aging time: 8 hours at least for each camera ...