Description Specifications Shelly BLU Wall Switch 4 is a smart four-button Bluetooth switch that enables easy and safe control of home devices. Compatible with several standard wall frames, e.g. Shelly, Legrand, Gira, Merten & Busch-Jaeger or as a stand-alone remote control. The device has long battery life (1xCR2032), a compact size, and multi-click support that provides up to 16 different functions using one, two, three clicks, and a long press. Compatibility with Home Assistant and any other device supported by the BTHome protocol. Size (HxWxD): 46x46x13 mm Weight: 17 g Shell material: PlasticAmbient working temperature: -20 degC to 40 degC Humidity: 30% to 70% RHPower supply: 1x 3 V battery (included)Battery type: CR2032Estimated battery life: Up to 2 yearsBluetooth protocol: 4.2RF band: 2400 - 2483.5 MHzMax. RF power: Range: Up to 30 m outdoors, up to 10 m indoors (depending on local conditions)Encryption: AES (CCM mode)
