Safety Technology International, Inc. STI-6400 Exit Stopper Multifunction Door Alarm, Helps Prevent Unauthorized Exits or Entries Through Emergency Doors
Brand: Safety Technology Intl
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).