Contains red and green alarm lights and buzzer with "squelch" button. Green light remains illuminated while "service" bank is in use. When service bank is exhausted, green light is extinguished, red light is lighted plus buzzer, rated 75 decibels within 100 centimeters, is activated to ensure notice of the alarm conditions. A touch of the squelch button silences the buzzer, but the red alarm light will remain illuminated until the exhausted bank has been replaced.

All panels may be for either exposed or flush mounting.

For open style manifolds, a 115/24 VAC power supply part number WMS-9-25C is required.