The Eberle 121-1701-51-100 RTR 9721 is an indoor, surface-mount thermostat designed for both heating and cooling applications. It offers precise room temperature control with electronic functionality, suitable for managing radiators and maintaining consistent temperature readings. Commonly used in residential or office settings, it serves as a reliable temperature controller and thermostatic radiator valve. https://elecena.pl/product/28800160/eberle-121-1701-51-100-rtr-9721-indoor-thermostat-heating-cooling-white 2025-05-25 https://elecena.pl/product/28800160/eberle-121-1701-51-100-rtr-9721-indoor-thermostat-heating-cooling-white 2026-08-30