Featuring a critical 0

and 1F series

reducing tangles and wire memory during onsite installation

If your system requires an insulated probe to prevent nuisance trips from scale buildup

providing a seamless fit for technicians servicing Lennox

Johnson Controls A421ABC-06 Temperature Control 30067439-890 Featuring a critical 0The Johnson Controls A421ABC 06 is a professional grade electronic temperature control engineered for high performance HVACR applications. As the direct replacement for A419ABC 4, this unit offers a seamless transition for technicians upgrading legacy systems. Operating on 120 240 Vac, it provides a versatile single stage control solution with an SPDT output relay, making it ideal for managing compressors, solenoid valves, or heating elements. This