Edwards 3-RS485B Network Communications Card

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Description

Edwards 3-RS485B Network Communications CardThe 3 RS485B card provides a Class B (Style 4) or Class A (Style 7) circuit for network communications signals. And a second Class B (Style 4) circuit for the digitized audio signals. Network messages the Network Communications card receives a re re transmitted to the next network node. Re transmission maximizes the wire run lengths between nodes. With 64 nodes, miles of network length is possible. Fail safe mechanisms built into the card directly

Annunciator cabinets are constructed from 16 gauge cold rolled steel

This operation has traditionally required two different circuits (four-wire operation)

but offer added aesthetic appeal

Use proper conduit or raceway as required by local codes

field selectable 135/185cd

They also supervise the wiring to the connected loads and report their status to the panel as normal

which mounts on a 4-inch octagon

When lifted to gain access to the break glass

Intuitive front panel programming

the SD505-APS offers easy installation

Smart on-board filter retains dust count and remaining filter life for predictable maintenance

Polling LED visible through the cover plate