Measuring instruments, Testers
Local-area network testers, Communication line testers, Related products
Field testers, Related products
Thermometers, Thermohygrometers, Anemometers
Atmosphere analysers, Gas analysers
Water quality measuring instrument, Analysers
Other instruments, tools

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| Before | Response | 
| Color Developing Temperature | Tone of Color Change | Quantity | |
| 3I50 | 50/60/70℃ | White→Brown/Green/Red | 100pcs | 
| 3I55 | 55/65/75℃ | White→Blue/Black/Brown | |
| 3I60 | 60/70/80℃ | White→Green/Red/Blue | |
| 3I65 | 65/75/85℃ | White→Black/Brown/Green | |
| 3I70 | 70/80/90℃ | White→Red/Blue/Black | |
| 3I75 | 75/85/95℃ | White→Brown/Green/Red | |
| 3I80 | 80/90/100℃ | White→Blue/Black/Brown | |
| 3I85 | 85/95/105℃ | White→Green/Red/Blue | |
| 3I90 | 90/100/110℃ | White→Black/Brown/Green | |
| 3I95 | 95/105/115℃ | White→Red/Blue/Black |