Honeywell Aquastat Relay, High and Low limit, 120 VAC, 120 to 240 deg F, 8 deg F Differential, Horizontal/Vertical Mount, 1-1/2 to 3 in Insulation Depth, 0 to 95% Humidity
The L8148 Aquastat® Relays are immersion type hydronic controllers that combine high limit protection with switching relay control of burner and circulator motors.