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Controlled Entry - Free Exit:
"Controlled entry, free exit" is one of the most popular setups for automated gates.  Safety and security coupled with convenience and comfort make this application ideal for residential and commercial automated gate projects.

System Consists of: System Sequence
1 - Operator
     (single or dual application)

1 - Time Delay
      (included with the purchase of an Linear/OSCOŽ  gate operator.)

2 - Loops

2 - Vehicle Detectors

1 - Entrance Device*
     ( i.e. keypad, card reader)

1 - Three button Switch
      (included with the purchase of an Linear/OSCOŽ gate operator.)

*Note: Other entrance devices may be used,
              i.e. radio controls, telephone intercoms, etc.

The vehicle approaches the entrance and driver uses the entrance device, i.e. keypad, card reader, radio device.  This creates an impulse which actuates the operator and opens the gate.

As the vehicle travels through the opening, it passes over the "outer loop" and "inner loop" creating an impulse to hold the gate open.  When the loops have been cleared, the timer, after a preset period, sends an impulse to the gate operator to close the gate.

If the gate is closing as a vehicle reaches the loop area, the gate reverses to the open position and the timer automatically resets.

From inside the fence line, the vehicle approaches the exit and passes over the inner loop.  This transmits an impulse to actuate the operator and open the gate.  As the vehicle passes over the inner and outer loops, an impulse is transmitted to hold the gate in an open position.  When the vehicle clears both loops, the timer (after a preset period) sends an impulse to the gate operator to close the gate.

*Hoover Fence Co. Recommends Safety Devices On All Automated Gates.