This Carrier HR54ZA006 model is built with a high-impact housing and heavy-duty spring-loaded plunger to withstand the high-cycle demands of a professional mechanical room environment

Noise Suppression: Advanced EMI and RFI protection meets North American and European standards for reduced electronic interference

The Armstrong Furnace R37520B002 Rollout Switch is a critical safety component designed for precise thermal monitoring within residential gas furnaces

Its robust construction is designed to withstand the rigors of field service in industrial environments

Internal LED Indicator: Provides immediate visual confirmation of the relay coil status for efficient troubleshooting

Johnson Controls A19AAC-38 Utility Thermostat 30067439-890 This Carrier HR54ZA006 model isJohnson Controls A19AAC 38 Utility Thermostat, 120 208 240 Vac, 50 280 Degree Temperature Range, 2 Degree Differential, SPDT, Bulb Style 1, Screw Driver Range Adjuster A19AAC 38 is identical to A19AAC 38C