This 40VA 120V to 24V transformer provides the necessary voltage step-down to power thermostats

while the other leg (L2) remains connected through a shunt

What are the symptoms of a failing S1-024-19138-001 relay

ensuring consistent communication between the flame sensor electrode and the Honeywell ignition module

Copeland Comfort Control (White Rodgers) 24A06G-1 Relay Refrigerant This 40VA 120V to 24VThe Copeland Comfort Control (White Rodgers) 24A06G 1 Relay is a heavy duty, dual load 240V electric heat relay designed for professional contractors managing multi stage or high wattage resistive heating applications. This DPST (Double Pole, Single Throw) relay allows a single 24V low voltage thermostat to control two independent 240VAC line voltage loads, making it the industry standard cross reference for the obsolete Honeywell R841E1068. Built