S4 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, and the on-off state of doors, windows and drawers. In this way, S4 helps realize remote monitoring, intelligent nursing, abnormal warning, scene linkage, etc.
S4 consists of the 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.

√ Simple design: its elegant and simple design makes it fit into your modern home.

√ Tamper alarm: if tamper by others, it will send the message to the owner, which can be thief-prevention.

√ Easy to install: simply and directly attached to the object by double-sided adhesive tape.