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Home --> Fire Alarm Systems
Hi-485 Interface Card
  • General
  • Feature
  • Specification
The Hi485 Interface has three bi-directional RS485 ports, between which unrestricted communication of data is allowed. Several Hi485 Interfaces are typically used to form a loop. This ensures that data is communicated to every device connected to the line, even if a fault exists, and each interface acts as a node access point onto the loop. Adjacent nodes are able to detect and isolate transmission line faults such as short and open circuits that exist on the wiring between. The nodes also act as signal repeaters/boosters, which enables “High Integrity” loops of up to 12km to be constructed.
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Dimensions: 145mm ´ 112mm ´ 22mm Supply Voltage: 18V - 28V DC Supply Current: 40mA @ at 24V DC (typical) 100mA maximum in fault condition Volt free contact rating: 1A @ 24V DC Communications: 3 ´ RS485 balanced transmission ports
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