This Honeywell  Aquastat Relay is an essential component for controlling and regulating temperature in heating systems. It is designed to work with Milli-volt system . The unit hooks up to 120v to run the electric circulation pump. The steel material and United States origin ensure durability and reliability. This Horizontal mounted Aquastat Relay model L8148A-1009 comes with an option for Automatic or Manual switch that can be used in Manual mode if power is out.  It weighs around 3 lbs. and is suitable for use in HVAC Milli-volt  Nat. Gas heating systems.

Had to purchase this unit to get through this past winter, it works great, I purchased this last year for 140 used, we had a new furnace on order from last year but was still on backorder till now so no longer need this unit.

I will ship this Honeywell Aquastat USPS Ground Advantage to the Auction Winner free of charge. Thankyou for looking and good luck Bidding !