8 channel Bidirectional Contact closure over Fiber optic converters a set- SC Singlemode Fiber up to 20Km, Multimode 500M for Door Open and Door Close,Entry Access Control,Alarm System and More 1 x 4CH HD-SDI Receiver

1 x 4CH HD-SDI Receiver

1x Balanced XLR Audio Fiber Receiver

Audio input/output impedance: 600 Ω balance

FIBER:Off when fiber optical signal is blocked or excessive attenuation

Tx power ＞-7db

8 channel Bidirectional Contact closure over Fiber optic converters a set- SC Singlemode Fiber up to 20Km, Multimode 500M for Door Open and Door Close,Entry Access Control,Alarm System and More 1 x 4CH HD-SDI ReceiverFeatures: Extend 8 channels of Bi directional contact closure signal to remote end through an optical fiber cable. Long transmission distance, up to 20 km (11. 42 miles) over Singlemode fiber, and up to 500m (0. 31miles) over Multimode Fiber. Applicable for Door Entry Access Control System, Fire & Alarm Systems, Alarm Event Triggering, Building Automation and Environmental Control Systems, PIR signal Transmission, Traffic Signal Control Equipment, etc