To assemble an IR Transmitter you will need a soldering iron, solder, wire cutters and pliers. Another tool that makes assembly very simple is a set of “Helping Hands”. This is a tool that has 2 clips that can hold electronic parts in place while you solder them together. If you use a set of helping hands wrap the clips with electrical tape to protect the electronics.

CAUTION: Read the caution in the Stair Light Assembly section. It also applies to the IR transmitter. It is also very important that the IR transmitter is only connected to the IR port on the Lighting Control Unit located at terminals 3 and 4. Connecting the transmitter to any other terminals (or direct power) will cause damage to the unit.

The IR Transmitter assembly consists of a current limited IR LED that can be directly controlled by the Stair Lighting Controller to produce a beam of invisible light, this light will be used to detect people entering the stairs. The wire leads are 10 inches long; this is long enough to connect the IR Transmitter to a wire that runs to the controller. Each IR Transmitter includes 2 crimp connectors for this purpose.

1. Prepare the cable. Cut a section of cable to 10 inches. Strip the end off the cable exposing the 4 conductors inside.

2. Remove extra conductors. We only require the red and black conductors; the yellow and green ones can be cut out. Cut them as close to the jacket as possible.

3. Trim components. Trim the resistors as shown and place them beside the IR transmitter in a staggered fashion. This layout will give the unit the slimmest profile possible when completed. Clip the IR transmitter’s leads to match the resistor lead placement. In the picture the cathode (negative side) of the IR Transmitter is down, it is important to orientate it the same way at this point otherwise the IR transmitter will be hooked up backwards and will not work. To identify the cathode look for a flat side on the IR Transmitter.

Both resistors used are the same value, 7.5 ohms.
The value of the resistors are represented by colored bands on the resistor.
7.5 ohms is BROWN GREEN GOLD GOLD.

4. Solder the resistors. Hold the resistor in place while soldering the IR transmitter lead to the lead of the resistor. Remember not to apply too much heat, read the caution. Next solder the 2 nd resistor in place, remember to stagger the resistors as shown.

5. Trim and connect the wires. Ensure the long and short resistors were hooked up correctly as described in step 3 before progressing. The resistor closest to the IR transmitter should be connected to the lead that is beside the flat side of the IR transmitter. If this is not the case reverse the color of wires that are shown in the picture when connecting them. Trim and strip the wires long enough to connect to the resistors. Slide the heat shrink over the black wire. Solder both wires to the resistors.

6. Install black heat shrink. Slide the black heat shrink over the resistor and bring it tight to the IR Transmitter body. Carefully heat the heat shrink using an appropriate heat source while making sure the IR Transmitter does not get hot (read the caution again)! Once the heat shrink is in place there should be no exposed wire on the black side.

7. Install red heat shrink. To protect all of your hard work slide the red heat shrink over the resistors and the exposed wires. Carefully heat the heat shrink using an appropriate heat source.

8. Prepare the wire connection end. Strip the end and remove the wires that are not being used, only keep the black and red wire. Then strip the ends of the black and red wires and you are done!

Take a look at the online store for kit purchasing options and prices!