This is the Best Wireless PowerG Outdoor Beam on the Market with coverage up to 350′ & It Includes (4) Brand New D-Size Wireless Lithium Batteries Included. View the image library. Aesthetically pleasing slim and compact design. Ideal for commercial applications and large residences. Market-leading perimeter detection using Active Infrared Technology (Photoelectric beams) and PowerG range. Transmitter is designed to send an infrared beam over long distances. Coverage area of 200 ft. With short range model PG9200AX and 350 ft. With long range model PG9350SL. Easy to install with view finder, alignment dials and LED indicators. Reliable performance with twin (PG9200AX) and quad (PG9350SL) beams. Cover and wall tamper protection. Extended battery life with PowerG. Polycarbonate cover protects the cover of the beams from UV rays and other harsh environmental conditions. Compatible with PowerSeries Neo, PowerSeries Pro and Qolsys IQ panels. Coverage area of 350 ft. Reliable performance with quad (PG9350SL) beams.