Relay Expansion Board with Fire Alarm InputPart# MAC 005 FC Fire alarm output and the expansion of joint board is one of the access controller add on modules used to provide fire and alarm signal output. The module has a practical, simple interface with stable design performance characteristics. Its power and relay instructions can direct communication failures. Features: 4 alarm output, free to the host controller to the definition of a door and the door to a number of features Can connect
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