WRT-3710 SERIES Line voltage, 3 speed fan, heat/cool control, back light, 2 pipe and 4 pipe fan coil control, optional dry contact output. Features ○ 2-pipe or 4-pipe heating/cooling available ○ Auto fan with adjustable 3-fan speed. ○ Display shows both set points and room temperature simultaneously ○ Display shows the valve on/off status. ○ The highest and lowest set piont can be set. ○ Keep user setting during power loss ○ Switch between ℃ and ℉. ○ 7-Day Programmable for customization ○ Compressor short cycling protection available ○ Dry contact output ,compressor linkage ○ Anti-freezing protection Technical data ○ Voltage: AC220V±10% 50/60Hz ○ Power load: 3A/5A ○ Setting range: 5°c~35°c Accuracy: ±0.5°c ○ Ambient temperature: -5~50°c ○ Protective housing: IP21 ○ Housing material: PC+ABS ○ Dimensions: 86mm×86mm×15mm Flush mount Packing information Packaging Detail: 84pcs per carton. Carton:50cm*32cm*30cm . G.W: about 22kg/CTN