Note: As of January 1, 2020, Interlogix has discontinued North American production and sales.
Give us a call at 425.454.9900 or email us if you would like help finding appropriate replacement products.
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Polarity Reversal Relay, 12/24VDC for use with 4 wire smoke detectors. ESL 405-05 polarity reversal relay modules are designed for use with ESL smoke detectors that have built-in sounders.On alarm, the module applies reverse polarity to the detectors activated by the bell or programmable output. Applying reverse polarity causes the sounders on detectors not in alarm to activate.
