... )Thernostat digital convenient instal Incubator thermostat digital with thermostat switch HSY-209 series digital thermostat, with the most advanced ... changes in the subsystem of chi electric valves, or switch to maintain indoor temperature purpose. 1, Product features 1 ... interface, LCD screens 3) Power, wind speed adopts 6with switch, convenient and intuitive 4) without electricity data memory, calls ...