... 4)with nigh visi,high definition,dustproof image sensor:PC1030/OV7950effective pixel:PAL=704*576Pixels NTSC=712* ... p,75ohmsync system:Internal Synchronizationoperation Temperature:-20°C~+75°C(RH95%Max.)Storage Temperature:-40°C~+85°C(RH95 ... reference line:optionaloperating voltage:DC12VNote: waterproof, shockproof, high temperature resistance,small in size,light weight ,high definition,humidity ...