Number Thermo Patch(R) (Reversible) 120pcs WR-40 1 box (120pcs)

It uses reversible thermo ink, and when heated, numbers indicating specific temperatures (for example 50°C, 60°C, etc.) appear sharply. Once the temperature drops, it will return to its original color and can be reused. The back of the number patch has a heat-resistant adhesive applied. Heat-resistant film is sandwiched between the containers, providing excellent durability when sealed. Color change accuracy: ±2°C Size: φ18mm Heat resistance: Approximately 90℃, continuous heating for 1000 hours (20×30mm test piece) Water resistance: Approximately 1 month in room temperature water Quantity: 1 box (120 sheets) Discoloration temperature: 40℃ Reversibility Low temperature color High temperature color: Reddish yellow ⇔ Reddish orange *The color change from high temperature to low temperature due to a drop in temperature is approximately 15°C lower than the displayed temperature due to the hysteresis phenomenon.