Electronic Thermostat Model: KT-TC802 Size: 86 mm × 86 mm × 10 mm BR> Material: Plastic frame touch panel Color: panel (color can easily plating) Features: high-grade materials and beautiful Operating voltage: +9 V ~ +15 V Size: 86 mm × 86 mm × 10 mm (length × width × height) Output interface: ELV 485 Features: Cold / Hot solenoid valve conversion, fourth gear speed adjustment function. digital display to set temperature and actual temperature Installation: Standard installation of 86 boxes