FC40R1169/U No Image It detects temperature drops below

It detects temperature drops below a fixed safety value (setpoint)

The Smart Stat controls almost all commercial equipment types requiring single-setpoint control

low-temperature limit/cut-out thermostat with a 6 foot capillary sensing element

They also last up to three times longer than standard one-inch filters

Versatile Transformer: The AT20 Transformers are Step-Down Transformers used Primarily for Powering 24 VAC Control Systems

FC40R1169/U No Image It detects temperature drops belowThese Honeywell Home High Performance Return Grille Filters from Resideo help trap airborne dust, pollen, mold spores, bacteria and other allergens that pass through your HVAC system. They also last up to three times longer than standard one inch filters, which mean less maintenance for improved indoor air quality.