Althought the actual range varies by terrain or other environmental factors, the WMA-3000 is  long range wireless driveway monitor capable of sending a signal from the wireless transmitter to the plug in receiver up to 600 feet.

• You may also use additional receivers and sensors with the 3000 series motion alert systems.
• The motion sensor/transmitter is weather proof and meant for outdoor use. With the use of additional transmitters, up to four zones can be monitored simultaneously. The use can also program the transmitters so they will each sound different tones at the receiver.
• The plugin receiver in this set is the WR-3000 and plugs into a standard wall outlet. It may be set to one of four tones (Classical, Westminster Chime, Ding Dong, or Whistle) and has a volume control as well. 
• The WR-3000 is equipped with four form “C” relays (one for each channel) and one 12-volt DC output terminal that will activate for several seconds when a signal is received. The receiver can be user-programmed, so the 12-volt DC terminal and one relay will activate for 10 minutes, if this is desired. The tones will still sound for several seconds.
• Temperature operating range of this product is -30 degrees to 120 degrees fahrenheit