Honeywell THM5421R1021/U 2-Wire Interface Module Venmar AVS - N Series Air filter life notification (%)

Honeywell THM5421R1021/U 2-Wire Interface Module Venmar AVS - N Series Air filter life notification (%)Honeywell THM5421R1021 U 2 Wire Interface Module, 2 Wire, Screw Terminal Electrical Connection, Temperature Rating: 40 to 165 deg F, Vertical Mounting Features: Equipment interface module controls up to 4 stages of heat and 2 stages of cool in a heat pump system and up to 3 stages of heat and 2 stages of cool in a conventional system. Three sets of universal IAQ contacts to control humidification, dehumidification, and ventilation. Four sensor inputs

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