The ThermaSol MicroTouch control is a fusion of understated design with efficient performance for a consistently tailored performance every steam session. With capacitive touch technology, use of the control functions similarly to a smartphone device. Wellness seekers can power on/off, alter temperature for steam quantity, and adjust the built-in 45-minute timer. Infrared temperature sensing actively monitors the steam shower to regulate overheating and maintain a safe environment. Using one-touch start, the MicroTouch automatically recalls previously used temperature settings for a tailored experience without waiting around for steam. The control features water and steam proof construction with a fog-free display to always remain visible and functional. Additionally, the control can operateFastStart(TM) and PowerFlush(TM) technology for proficient and long-lasting use. Round dimensions: 2.9"Diameter (7.4 cm) x 0.6"D (1.5 cm) Square dimensions: 3.8"W (9.7 cm) x 0.6"D (1.5 cm) x 3.8"H (9.7 cm) Designed, engineered and built in the U.S.A. Construction:6061 billet aluminum Display:16-LED temperature display Interface:3 capacitive touch buttons Communication:CAN Bus data cable Supply Voltage:5V direct current