Open the back panel by removing the 2 screws and insert the batteries.
Please respect the correct polarity.
At this point you can also make a few personal settings as shown below:
Switch1 (Detection distance)
If switch 1 is set to "on" the detection distance is up to 12 meters. If it is
set to "off" the detection distance is set to up to 6 meters.
Switch 2 (Indicator light)
If switch 2 is set to "on" the indicator light will give a red flash when motion
is detected. If it is set to "off" there will be no indicator light.
Now, close the back panel again and screw it tight. Please note that the back