Electronic operation|Easy to install and wire|Red low water indicating LED|Green power indicating LED|Now with test button|No blow-down required|20000 Ohm probe sensitivity
McDonnell & Miller GuardDog Low Water Cut-Off, Electronic, Series: RB-122-E, 120 VAC, 120 deg F, 160 psi, Automatic Reset, NPT, 3/4 in, 3.1 VA, 3-3/16 in W, 2-3/4 in Height