ETC-961 Mini Temperature Controller Microcomputer thermostats Digital Thermostat Refrigeration Alarm 220V NTC sensor                 Working conditions:               Power supply:230VAC±10% 50/60Hz        Rated current of the relays(refrigeration):10/220VAC        Use temperature:-5℃~55℃Relative humidity:10%-90%RH(not condensing)        Storage temperature:-30℃~85℃                                        Specification:               Product；Length 77x Width 34.5xDepth 58(mm)        Mounting size:Length 71× Width 29(mm)        Probe wire length:2M(including the probe)                                        Technical Parameters:               Temperature controlling range:        NTC probe:-50..,110℃(-58..230"F)        PTC probe:-55...140℃(-67..284F)        Display resolution:1℃/0.1℃（with the switch mode between integer and decimal）        Accuracy:NTC:±0.5℃（-30℃-50℃），other,±1℃         PPT:±1℃（-30℃-50℃），other，±2℃        Probe type:NTC(-50℃-120℃)  PTC(-50℃-150℃）                                        ETC-974 Mini Temperature Controller Refrigerator Thermostat Regulator Thermoregulator Thermocouple NTC Dual sensor 220V        Specifications:        Model:ETC-974        Temperature measure range: NTC probe :-50~110°C(-58~230°F)        PTC probe:-55~140°C(-67~284°F)        Display resolution:1°C/0.1°C(with the swithch mode between integer and decimal)        Accuracy:NTC:±0.5°C(-30°C~50°C)；other±1°C        PTC:±1°C(-30°C~50°C); other±2°C        Probe type :NTC(-50°C~120°C)  ;PTC(-50°C~150°C)        Power supply:230VAC±10% ;50/60Hz        Rated current of the relays(refrigeration ,defrost and fan):8A/220VAC        Use temperature:-5°C~55°C        Relative humidity:10%-90%RH (not condensing)        Storage temperature:-30°C~85°C        Input: 2 NTC sensor        Sensor lenth:2M(include the probe)        Product length:77*34.5*58mm        Mounting size:71*29                                 ETC-3000 Mini Temperature Controller Refrigerator Thermostat Regulator Thermoregulator Thermocouple NTC Dual sensor 220V             Specifications:           Model:ETC-3000      Temperature measure range: -45.5~120°C      Temperature controlling range: -45.