Check the listing for details. 2 Pcs GB001 Analog CCTV BNC Video Ground Loop Isolator Built-in Video Balun. Condition: New. Listed at 25.95 USD. ANALOG CCTV VIDEO GROUND LOOP ISOLATOR WITH BUILT IN TRANSIENT VOLTAGE SUPPRESORS FOR SURGE PROTECTIONModel: GB001 x 2 PcsThe GB001 is a passive device which reduce Ground Loop Interference with Analog CCTV signal and can easily install in a new or added to existing systems. It is useful where a video signal is transmitted via cable between points with different ground potentials. Differences in ground potentials are typically caused by unbalanced power line loads.Features:BNC male to BNC female with mini cable 18cm on both sides.Passive, no power required.Prevents video-signal distortion caused by video ground loops.Eliminates picture tearing, cross talk and rolling.Prevents power cables laid by others interfering with the CCTV system.Built in Video BALUN, perfect to work with DVR to immunity DVR interference, for extra interference rejection.Built in TVS (Transient Voltage Suppressors) for surge protection.Install at DVR side: Install at camera side:Specifications: ITEM NO. GB001 Insertion Loss 0.5dB Frequency Response 20Hz -10MHz (0～3dB) Coaxial Input/Output Resistance 75 Ohm Ground Isolation >90dB @ >50Hz Isolation Voltage DC 600V (Min) Insulation Resistance 100M Ohm Transient Voltage Suppressors 12 Vrms Dimensions mm 73.3 x 28 x 21 with 18cm x 2 Cable Weight g 78 Terms of sale: We can’t ship to addresses other than the address stated in the order form. Please make sure your address is correct and complete. Please be advised that we’re not responsible of any delay or lost package due to incorrect addresses. Item warranty is one year. All defective items should be notified within 10 days after item received. Please note that warranty will be void if the item is modified or misused. If the item is returned claiming defective and after the diagnostic is found that is not, there will be a 20% restocking fee plus any Shipping & Handling fees that incurs. If buyer purchased a wrong item or bought it by mistake, buyer is responsible for the return shipping. Shipping & handling charges are non-refundable. For free shipping orders, the shipping cost incurred will be deducted from the refund. Thank you!