"You can't be everywhere at once" but you can with Voice Alert. You record your own voice messages that play back whenever movement is detected by a wireless Voice Alert motion detector. "someone is coming up the driveway", "danger,child by the pool", "intruder in the garage", "someone is in the yard", "the mail has arrived", "customer is in the store". Install the wireless motion detectors wherever you want to monitor movement, indoors or outdoors. This patented system is the only one that allows the user to customize their message to suit the situation. The motion detectors are weatherproof and install in seconds. Monitor a 40 foot by 40 foot area and transmit up to 300 feet through walls or up to 1000 feet in open space. The system sets up in minutes, stores 6 separate messages, has volume control, message notification light, message playback button, low battery light, low battery message and includes batteries.