Features: Working voltage：DC4-30V. Temperature range：-50 ° C ~ 120 ° C. 2 types for your option: annular rod Easy installation: Red wire for positive, black wire for Widely used in the fish for refrigerator, water, temperature control for. Specifications: ABS Type: annular rod optional Operating voltage: DC4-30V Temperature measurement: -50℃~120℃ error ±1.7° (not adjustable) Working current: equal or less than 20mA Temperature ring-shaped or rod-shaped 3950 10k1% length 100cm Package Includes: 1x Digital note Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Working voltage：DC4-30V. Temperature range：-50 ° C ~ 120 ° C. 2 types for your option: annular rod Easy installation: Red wire for positive, black wire for Widely used in the fish for refrigerator, water, temperature control for