The Shelly BLU Wall Switch 4 ZB DK is a versatile, battery-operated push-button switch specially developed for Danish wall mounting standards. With four buttons, this switch enables control of lighting, blinds, garage doors and other automations. It is supplied with a frame and double-sided adhesive tape for easy installation on the surface. The frame can be removed to allow integration into existing switch programmes. The supplied CR2032 battery has a lifespan of over five years. Each button supports up to four actions including single, double, triple and long press. The switch can be paired locally with Shelly relays, dimmers and shutter controls without the need for an app. It can be connected to Shelly Smart Control for advanced scenarios. The Shelly BLU Wall Switch utilises Bluetooth for fast response and has built-in Zigbee for integration with third party Zigbee platforms. All Shelly BLU devices require a gateway for network access. Battery operation with over 5 years of life. Supports up to four actions per button. Compatible with Shelly Smart Control for advanced automation. Full local pairing with no app required. Integrated Zigbee for third party platforms.