Fangrui Product Details Model: Etc-974 Temperature Measure Range: Ntc Probe:-50-110c(-58-230f); Ptc Probe:-55-140c(-67-284f) Display Resolution: 1c/0.1c(with The Swithch Mode Between Integer And Decimal) Accuracy: Ntc:0.5c(-30c-50c);other1c. Ptc:1c(-30c-50c); Other2c Probe Type: Ntc(-50c-120c); Ptc(-50c-150c) Power Supply:230vac ;50/60hz Rated Current Of The Relays(refrigeration ,defrost And Fan):8a/220vac Use Temperature:-5c-55c Relative Humidity:-rh (not Condensing) Storage Temperature:-30c-85c Input: Ntc Sensor Sensor Lenth:2m(include The Probe) Theory: Temperature Controller Display Type: Digital Usage: Household Power Type: Charger Style: Standing And Wall Hanging Display Size: 1.9 Inches Under Color:black Material:plastic Size:77 X 34.5 X 58mm Package Contents: 1 X Etc-974 Digital Temperature Controller Only The Above Package Content, Other Products Are Not Included. Note: Light Shooting And Different Displays May Cause The Color Of The Item In The Picture