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As a technical HVAC control board
the electrical contacts remain closed during normal operating temperatures and open when the ambient heat reaches the 160°F set point
by adding a ZG-R01 500 Ω resistor
the Allanson 2275-658 offers low current draw and superior EMI/RFI shielding
Laars Heating Systems RA0079000 Gauge 322056-301 As a technical HVAC controlThe Laars RA0079000 is an OEM combination temperature and pressure gauge designed for precise monitoring of hydronic heating systems and commercial boilers. As a ruggedized test gauge, it features a dual scale display providing critical real time data to prevent system overheating and high pressure surge scenarios. This unit is a direct replacement for Teledyne Laars equipment, specifically engineered for compatibility with Mighty Therm2 200, 300, and
US$ 17.10
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