Security beams

Perimeter security

Perimeter security beams are intended to detect human intrusion, not a bird or rodent, so need a level of tolerance. That can be by having a minimum length of time a beam must be broken by, or breaking morethan one beam at a time.

DSE perimeter security curtains

DSE are security devices for protecting perimeters up to 30m.  Shorter range 10m sets are targetted at shopfronts, vehicle entrances, patio doors or narrow gardens.

Two or more beams must be broken to trigger an alarm. A jumper link selects one of two frequencies to allow two DSE sets to be used near each other.

DSE8 has 8 primary beams beams. DSE10 has 10 primary beams and 16 interlacing beams.

DSE setting

There are three emitter powers set on jumper links on the master and slave marked S, M, and L.

The transmitter LED flashes when one beam is blocked, or lights solid when 2 neighbouring beams are blocked. The relay activates when the LED lights solid. The receiver’s red LED lights only when one of its own receivers is blocked.

DSA's are mounted vertically with horizontal beams. They can be either way up (but must be the same). LED beam spread is narrow so master and slave need to be at the same height.

The aluminium body rotates through 270 degrees, so the mounting surface may be at an angle. There is a buzzer in the master to help alignment. 

Standard wire colours are shown clarity and diagnosing problems. The transmitter and receiver sides are powered the same (RED & BLACK). The WHITE sync’ wire RT  runs from one side to the other. Relay contacts on the transmitter side are shown wired in YELLOW & BLUE. NC or NO are set by an internal jumper. NC is fail safe. 

Tx and Rx both have a red flashing LEDs. When the beam is blocked, an LED on RX flashes every 3 secs. When unblocked LED flashes 4 times then pauses. Receiver also has a red LED that is on when the photo beam is not interrupted