Lennox 21Z11 Smoke Detector kit 340155-7026 The universal output configuration allows

The universal output configuration allows the technician to select between 4-20 mA or 0-5/10 Vdc signals via onboard jumpers

or freeze protection circuits

Designed for universal replacement

making it suitable for systems utilizing electric heat strips as auxiliary or emergency heat sources

Lennox 21Z11 Smoke Detector kit 340155-7026 The universal output configuration allowsThe Lennox 21Z11 is a professional grade duct smoke detector kit engineered for seamless integration with commercial and light commercial air handling units. This HVAC smoke detection kit is critical for life safety compliance, providing rapid identification of combustion particulates within the supply or return air streams. Designed specifically for Lennox equipment, the 21Z11 interfaces directly with HVAC safety circuits and system control boards to