This Honeywell sensor is a wireless device designed to monitor the opening and closing of doors and windows. The product, known as the SHS BaseStation3WindowDoorSens, operates on a frequency of 2.4 GHz and uses Zigbee (ZB) protocol for communication. It has a range of up to 100 feet in open air, which can vary depending on the environment. The sensor is powered by two AAA batteries and features a low battery alert for user convenience. It also includes tamper protection, which triggers an alarm if someone attempts to remove or tamper with the device. The sensor is compatible with Honeywell's Total Connect Comfort service, allowing users to receive alerts and monitor their home security remotely.