The MARS 12166 is manufactured to a +/- 6% tolerance

Key Benefits Simplified VAV Integration: Eliminates the requirement for a dedicated room thermostat by allowing airflow settings to be made directly at the relay module

The 912-0001-12 typically features a side-mount interface that aligns with the mechanical actuator of the main contactor for reliable operation

always verify the specific differential and mounting footprint before installation

Trane IGN0033 Electrode Ignitor Els PW 17895 The MARS 12166 is manufacturedAs a field tested Trane IGN0033 Electrode Ignitor, this genuine OEM component is engineered specifically for high efficiency gas fired HVAC systems, including Trane and American Standard furnaces and rooftop units. Performance wise, the IGN0033 is a direct replacement for the now legacy IGN00033 and IGN00135 part numbers, ensuring a perfect drop in fit without needing to modify the burner assembly. This unit features a robust spark electrode design