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products > > Emergency Phones             SA-1     Scream Alert         Description Scream Alert activates Emergency Phones when a loud scream is detected. Designed for use with all 400 Series phones and for 100 Series phones with Aux Option. Use in stairwells, elevators, bathrooms and other indoor locations. Features Activates Emergency Phones by scream--totally hands-free. Adjustable volume and duration of scream required to activate Built-in battery back-up Face-plate constructed of stainless steel Specifications Weight: 2.5 lbs. Mounting: Flush mounts (use model K-SM to surface mount) Power Input: 9 volt DC power supply connects to 120 volts AC Power Output: Open collector output (15 volts DC maximum, 50 ma maximum) Construction: Stainless Steel Faceplate Dimensions: 4 1/8"W x 4 1/8"H x 2"D