With infrared sensor for bidirectional communication. 6 V lithium battery, type CR-P2. Battery life approx. 7 years (at 150 actuations per day) ergonomic metal handle. Grohe StarLight surface. Grohe CoolTouch. Backflow preventer. Dirt trap. Grohe SafetyPlus. Temperature handle with presettable safety end stop between 35°C and 43°C. Metal safety end stop unmixed hot or cold water in extreme handle position for sampling. Shower outlet bottom 1/2"" with integrated backflow preventer with concealed S-connections. Rosettes with wall seal multi-level battery status indicator. 7 preset programs: Automatic flushing, thermal disinfection, cleaning mode, additional functions and settings with remote control 36 407. CE mark. Fitting group I according to DIN 4109.