Wiser radiator thermostat regulates the radiator hot water flow within a Wiser heating control system (Zigbee). Easy to install and commission. Up to 64 devices including hub can be connected via one system. Further details in the online documentation. 51 x 93 mm (diameter x depth). Modular smart home connection via the Wiser system, local and remote APP control, schedules, moments (scenes) and automations via the Wiser Home APP. Zigbee 3.0. Easy to install, battery operation via 2x alkaline batteries (AA). Successor to MEG5935-0000. System configuration via the Wiser Home APP (online and offline!), additional installation support via eSetup APP for qualified electricians.