Wireless Motion Alert 3000- Dakota Alertwireless motion alert 3000- The next step in the evolution of the driveway alarm; the ultimate in wireless systems- Transmitter operates on one9-volt battery and is easily mounted on a tree orpost near the drive- Transmitter uses a passive infrared (PIR) beam to detect people or vehiclesto a distance of up to 80 feet then sends a radio signal back to the WR-3000 receiver up to 3 000 feet away (depending on terrain)- Transmitter is weather proof and meant for exterior locations- Up to four zones can be monitored with additional transmitters- The transmitters can be programmed so they will each sound a different tone at the receiver- The WR-3000 is the receiver for the WMA-3000 system- WR-3000 plugs into a standard wall outlet and can be placed on a table or mounted on the wall- When the receiver gets a signal from the transmitter one of four different tones (Classical Westminster Chime Ding Dong or Whistle) will sound- There is also a volume control allowing you to set the sound to the desired level- WR-3000 is equipped with four form ""C"" relays (one for each zone) and one 12-volt DC outputterminal that will activate for several seconds when a signal is received- The receiver can be user-programmed so the 12-volt DC terminal and onerelay will activate for 10 minutes if this is desired; the tones will still sound for several seconds- AshEXTRA WIRELESS TRANSMITTER: DK-WMT-3000EXTRA WIRELESS RECEIVER: DK-WR-3000DKWMA3000, Receiver can only be 600 feet away not 3000 SKU: TDDK-WMA-3000