Hooshion&reg; Entry Door Bell Alarm Chime Doorbell Wireless Motion Sensor Detector Split Alarm Infrared Patrol Driveway Alert System (Transmitter & Receiver) Includes wireless sensor and wireless receiver Just place the sensor at the entrance to your driveway and the receiver inside your home It detects movements and sends a signal to the receiver from up to 100m away Alerts you when someone enters your driveway, such as visitors, vehicles, intruders, animals or kids Advanced notice when someone or something enters before they surprise you