Honeywell Tradeline L4006H 1004 Aquastat Controller designed for high limit control of liquids in boilers or tanks. This SPST switching device features a manual reset button and is suitable for strap-on mounting. It includes a visible setpoint scale and an external adjustable screw for precise temperature management. The package comes with the controller unit, mounting bracket, hardware, and original installation instructions. Assembled in Mexico, this industrial-grade component provides reliable trip-free manual reset functionality for hydronic heating systems.
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