On eBay Now...UTC /G.E ESL Polarity Reversal Relay, 24 Vdc For 2&4 WIRE ESL SMOKE DETECTORS For Sale
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UTC /G.E ESL Polarity Reversal Relay, 24 Vdc For 2&4 WIRE ESL SMOKE DETECTORS:
$19.99
NEW IN BOXUTC / GE Security 405-01 Polarity Reversal Relay, 24VDC for Use w/2 or 4-Wire Smoke Detectors. 1 Circuit. Enables Any Control Panel to Trip All ESL Sounderhe ESL 405-01 Single Circuit Polarity Reversal Relay Module (24V DC) is designed for use with 2-wire ESL smoke detectors that have built-in sounders. On alarm, the module disconnects the detectors from their normal power supply and applies reverse polarity from the notification appliance circuit. Applying reverse polarity causes the sounders on detectors not in alarm to activate.
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