... , gray and other b.acklight color:blue, green Touch screen thermostat, for fan coil unit control, 2pipe,4pipe ... Larger, easy-to-read character size;Extra-large touch keys for easy operation;Clean, uncluttered touchscreen ... high, medium,low fan speed output* Ambient temperature: 0 °C [+32 °F] ~ +45 °C [+113 °F]* Operating RH: ... 13x13x7cm* Carton size: 68x28x43cm T8100AC series of touch screen thermostat