["The Milesight WS501-868M-3W-W11-EU is an intelligent wall switch with LoRaWAN technology, optimized for 3-wire systems. With a single button, it enables simple and reliable control of electrical devices in smart home and commercial environments. Ideal for controlling lighting, shutters and other electrical devices in LoRaWAN-enabled smart building and smart home systems", "LoRaWAN communication for wireless remote control", "Supports 3-wire connection – compatible with common cabling", "A single button for easy operation", "Robust wall design for easy installation", "Energy efficient with long battery life", "Frequency: 868 MHz (EU version)", "Model: WS501-868M-3W-W11-EU", "Communication: LoRaWAN", "Connection: 3-wire", "Button: 1 button", "Battery: Replaceable, long lasting", "Mounting: wall mounting", "Frequency: 868 MHz (EU version)", "Protection class: IP20"]