Johnson Controls T-4000-2140 Plastic Cover Versatile Control Logic: Dual-pole configuration

Versatile Control Logic: Dual-pole configuration (1PNO/1PNC) allows for complex switching in HVAC control circuits

wide-angle lens allows for clear inspection of bubbles or flash gas from multiple positions

this SPDT control is specifically designed to manage the switching between the upper and lower elements in a standard residential dual-element configuration

Whether you are performing a furnace repair or routine HVAC system diagnostics

Johnson Controls T-4000-2140 Plastic Cover Versatile Control Logic: Dual-pole configurationThe Johnson Controls T 4000 2140 is a high durability beige plastic cover engineered specifically for horizontal mounted thermostats within the T 4000 series pneumatic control family. This rugged thermostat cover provides essential protection for bimetal sensing elements while maintaining a professional aesthetic with the integrated Johnson Controls logo. Designed for utility and precision, the faceplate features a high visibility F C thermometer for