also known as the 500TO-1/2 heavy duty float valve

The Cleveland Controls DDP-109 is a heavy-duty dual air pressure sensing switch designed for precision in HVAC and energy management systems

When you're out in the field and find a blank thermostat or a dead control board

Converting this valve for use with Liquid Propane is not supported and can lead to equipment failure

Resideo PS1201A00 Power Supply 326058-758 also known as the 500TO-1/2Upgrade your air filtration system equipment with the Resideo PS1201A00 Power Supply, a direct replacement engineered for high performance Honeywell F50 and F300 electronic air cleaners. This 120 Vac component is chemically and electrically identical to the PS1201A00 U model, ensuring a seamless drop in fit for maintenance cycles. As a veteran technician knows, maintaining the correct ionizer voltage is critical for particle collection; this board