Shelly BLU Wall Switch 4

Uses BLE technology (Bluetooth-powered). 2 years battery life. Encryption (high level of security). Supports multiple clicks - single, double, triple and long press (16 actions in total). Beacon mode - when activated, the device sends beacons every 8 seconds. Compact size, portability and ease of use. Full compatibility with Home Assistant and any other device supported by the BTHome protocol (out of the box). If you want to use the device as a wall switch with your existing frames, choose one of the other variants of this product.