The S03D Bluetooth Door Sensor is designed for reliable door and window monitoring. Featuring data logging and real-time alerts, this smart sensor accurately detects opening and closing events. Enhance security and visibility across various environments, such as homes, warehouses, laboratories, and more. Its exceptional 2600mAh battery ensures an operational lifespan of over 8 years. Using BLE technology, the device wirelessly transmits status updates to mobile phones, enabling remote monitoring and smart notifications. Easy to install on doors, windows, or desk drawers, the S03D opening sensor adds security and automation to your smart IoT system at an affordable price.