When initially setting up the beams please try using a separate 12V DC PSU (2.1mm) to charge up their batteries - the DC socket is behind the Red cover next to the XVision label.
Power up the XSB200T beams and the XSB100R Wireless Perimeter Beam Receiver.
Ensure that both beams transmitters and receivers IR emitters/receivers are facing each other; for test place on top of box with solar panel facing downwards. Also ensure that both power buttons are solid Green.
You can now press and hold the Select Zone button to select Zone1 (red LED) on the XSB100R receiver box and then place an object between the beams ( Three IR beams) and the box will chime to indicate the beams have been broken.