Safety Technology International Exit Alarm STI-6400

● 100% AUTHENTIC AND FROM THE USA.

● Highly visible "stop sign" design acts as a deterrent

● Virtually indestructible polycarbonate housing

● Detects both unauthorized exits and entries

● Less expensive than heavy horizontal bar type units

● 3 year guarantee against breakage of polycarbonate in normal use (one year on electro mechanical and electronic components).