... on, up 50m effective distanceFeatures:*1/3" SONY CCD image sensor*420TVL, 540TVL, 600TVL, 700TVL are optional*4pcs Array IR Lamp ... CCDResolution420 TVL540 TVL600 TVL700 TVLInfrared Light4pcs Array of infrared light, strong brightness, exposure distanceArray light angle15°/30°/45°/60° optionalIR Distance0-150meterSignal SystemPAL ...