making it a drop-in replacement for common Essex/RBM 184 series and Honeywell R8222D models

The swivel design allows the user to position the display at eye level regardless of the orientation of the wire

For technicians troubleshooting intermittent ignition failures or communication errors

Its durable 3 lb construction includes a die-cast aluminum actuator and a replaceable neoprene diaphragm

loosen the fastening screw on the ZDB-TF

Hartland Controls 90340 Relay 319848-301 making it a drop-in replacementThe Hartland Controls 90340 Relay is a heavy duty, field proven solution for switching fan motor loads and managing auxiliary circuits in residential and commercial HVAC systems. As a veteran grade DPDT 24V relay, this unit features a 24 VAC coil designed for seamless integration with standard 24V control loops. Engineered for reliability, the 90340 general purpose relay utilizes double pole, double throw switching to provide independent control of