Radiator thermostat, intelligent heating control with illuminated LED display - HmIP-eTRV-E-S. Nearly silent operation for use in bedrooms. Boost function for quick heating of the room. Eco mode for energy-saving operation with reduced room temperature. Protection against calcification thanks to valve protection function. Prevention of accidental operation through control lock. Powered by 2x 1.5 V LR06/Mignon/AA batteries, with a lifespan of 2 years. Home automation made easy with Homematic IP. Homematic IP offers practical solutions for almost all situations in home life: The home control system simplifies daily routines and manages recurring tasks in the house, such as retracting the awning, closing the shutters, or opening the garage door. Control everything conveniently via the central unit, remote control, PC software, or smartphone. You have the option to combine different applications. Always expandable, always reliable. The Homematic system is flexibly expandable at any time. You can build your system piece by piece and customize it according to your personal preferences. Since the components communicate wirelessly, no wiring is required. The use of state-of-the-art wireless technology offers you nearly one hundred percent availability of functions. Innovative smart home products from eQ-3. Homematic IP is a product of eQ-3 AG. Since the 1980s, the ELV/eQ-3 group has evolved from a technology pioneer to one of the European market leaders in home control and is now one of the largest employers in East Frisia. eQ-3 stands for innovations across a wide range of technologies that, when combined, provide a competitive edge in consumer solutions.