User Instructions
Installation: Attach Velcro to the back of each unit.
Connect the 12v power supply to each unit. Do not connect yet the buzzer
circuit (if purchased). Do this at the end of installation using the NO
contacts (6 & 7) of the receiver's relay and use the receiver's power
supply to drive the buzzer.

If you wish to paint the cases do it now while they are
off the unit so you do not get paint on the led's.
With the cases off, attach the transmitter unit to the
wall facing the wall the receiver will be on (so the infra red beam will go straight into the receiver's led's. Attach the receiver unit to
the opposite wall at the same height as the transmitter. Ensure that it is
pointing at the transmitter. The system will allow you a little tolerance
in the positioning generally ± 2cm for every metre spacing between them.
Measure the distance between the transmitter and
receiver units. If it is 4m or more then put the red range switch onto Hi.
Use the blue potentiometer to adjust the power such that if it is 15m turn
it fully clockwise (as also 3m on Lo setting).
Turn on the power to the transmitter. No lights will
shine. Turn on the power to the receiver. No lights will shine. You should
here the click of the relay as it closes. If the led on the receiver is
shining it isn't receiving the beam. Turn the power up more blue
potentiometer and if that fails reposition the appropriate unit. Once the
led has gone out. Test by breaking the beam at different distances along
the path.
Finally when you are satisfied. Disconnect the power,
connect the buzzer (or wire free system) to the receiver relay. Put both
cases on. Reconnect the power. Your system is now functional.
We recommend you test it once a month and if you have
rearranged any of the display (might cause a reflection)
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