buy Sensor Eufy T89000D4 . The Eufy T89000D4 door sensor is a wireless security device designed to detect the opening and closing of doors and windows, integrating into the Eufy Security system by connecting with Security HomeBase or HomeBase E. It operates using wireless technology that ensures easy installation without visible wires, offering a practical solution to monitor access and enhance home security. Made with a discreet white finish, the sensor features compact dimensions of 28 mm wide, 22 mm deep, and 74 mm high, making it easy to place on almost any frame without being intrusive. Powered by a CR-123A battery, it provides up to two years of autonomy, reducing the need for frequent maintenance and ensuring continuous, reliable operation. Thanks to its CE certification, it meets European quality and safety standards. This sensor is especially designed for those looking to improve their surveillance system with a simple, effective, and durable component that sends immediate alerts when detecting movements on doors or windows, triggering the alarm to prevent unauthorized access. Its accuracy and easy integration make it an essential addition to the Eufy Security ecosystem, providing peace of mind through constant and efficient monitoring. Overall, this sensor represents an accessible and functional technological solution for home protection and access control in residential or commercial environments. Characteristics: WirelessBattery operatedBattery type: CR123ABattery operated: Yes1 Litio IonType: WirelessColour: WhiteBatteries included: Yes