Photo Eyes or Beams are “non-contact” devices that operate by shooting a beam of light across the gate opening. Interrupting the beam will prevent the gate from closing, or will stop the gate and reverse its motion.
Safety Edges are “contact” devices that operate when touched using pressure sensitive sensors. If an obstacle is encountered, the device signals the gate opener to stop and/or reverse operations.
Warning Devices such as Signs, Signals, Lights and Bells are useful accessories to any automated vehicular gate system. They provide visible and / or auditory indicators of potentially hazardous situations.