Bininca infrared photocell sensor wiring diagram request

[Hsj]

    Hi I wonder if some one can help me and let me know the wiring for the Bininca photocell receiver.iinside it has no as RX 42/20 V1.1,
We moved into the house recently, so While clearing the ivy from the hedge around the gate pillars I have pulled the wire and now I do not know which wire goes where it has five connection none is marked with + or -
The only thing I know is if I take them as 12345 from left to right no 4 was empty all the rest had wires unfortunately only wires no sleeve was left for me to match
Only I know is the wire colours were Red, Blue gren & white
Will appreciate your help.
Hope I get quick response