Wireless Driveway Alarm Door Chimes, Business Smart Infrared Visitor, White Style: Installation Steps: Specifications: Package Contents: ? USER-FRIENDLY: The door bell chime have 2 modes choices (LED Flash/Sound and LED Flash), You can personalize your doorbell with 38 unique ringtones and 4 volume levels. ? EFFECTIVE DISTANCE: Working range is up to 328 feet (100 meters). Infrared sensing distance is 3-7 meters. It can be successfully used for your home, office, shop, hotel or other buildings. ? PIR TECHNOLOGY : Our sensor uses state-of-the-art passive-infrared (PIR) sensor to detect any movement within the detection range. Perfect for long or hidden driveways and allows you a fore warning when guests (or intruders) are approaching. ? APPLICATIONS: It is not just a driveway alert, you could use it as an intruder alarm, alleyway alarm, critter detector, car alarm(interior), warehouse monitor, supply closet alarm, garage and tool shed monitor, mailbox sensor, front door or walkway detection. Also great to alert business owners that are working in the back, or out of sight, to customers entering their store. Use as a signal when pet is ready to come in or out. ? EASY INSTALLATION: As for this visitor chime, there are no wires to run, no installation hassles, the sensor is wall mountable. You just need to put in the batteries(not included), and place the wireless motion sensor and alarm receiver wherever you prefer.