Feature●Primary Color: White●Color after discoloration: Red - Green - Red Orange●Color Changing Temperature: 120/140/154°F (50/60/70°C)●Element size (φ mm): 0.2 inch (5●Sheet size: 0.6 x 1.2 inches (15 x 30 mm)●Measurement accuracy: ±2 degrees Celsius●Measurement method: irreversibleDescription
Once discolored, it is irreversible and will not return to its original color. Temperature can be detected by color changes.