S3 Temperature and Humidity Sensor is a high-precision digital thermohygrometer featuring Bluetooth Low Energy 5.0 technology. The portable device has outstanding waterproof performance. It comes equipped with an e-paper display screen, displaying real-time temperature and humidity data while consuming really low energy.

S4 Door and Window Sensor is loaded with Bluetooth Low Energy 5.0 hardware platform, can be installed on the doors, windows and even desk drawers. By detecting the opening and closing of doors and windows, the S4 can wirelessly notify users of arrivals and departures. The S4 consists of a main body, mounted to the door or window frame, and a magnet to be mounted to the door or window. The S4 Door and Window Sensor is an affordable way to add security and automation to the existing smart IoT system.