35-7426-4501 API with dual set points factory
set @ high (132 vac) and low (108 vac). Direct reading. During normal operation,
needle floats between red limit markers. If voltage dips or surges,
contacts make to trip alarm. Requires 10-25ma flowing through relay contacts to activate "locking coil". See instructions PDF for details. A suitable relay to be controlled by the contacts is our part number (KO) MB1199. 3-1/2" face, fits 2-5/8" hole.