... 10 years experience, specialize in producing Video balun3: Delivery Time: 1 week after payment confirmed4: Warranty: 2 years ... include PAL, NTSC, SECAM, compatible with post, real time transmission if no delay, multi-channel are aluminum alloy ... protection:2KV(Differential mode), 4KV(Common mode)Average time between failures(MTBF):>10000hoursWorking temperature:0°~55°CStorage temperature:-20°~80 ...