Ground Loop Isolator Intercom each user have one card

each user have one card and one PIN

- Card personification: writing

Aluminum Material Magnetic Lock L&Z Bracket – EL320 Series ZL bracket

door lock or both

Ground Loop Isolator Intercom each user have one cardGround Loop Isolator is designed to reduce Ground Loop Interference with CCTV signals and can be easily installed in new or 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 15 on both sides. Passive, no power required. Prevents video signal