4-point display type With adhesive Primary color: pale yellow Color after discoloration: black Discoloration temperature (℃): 100/105/110/115 Measurement method: irreversible Measurement accuracy: ±2°C Element size (mm): 2 Element size (φmm): 2 Seal尺寸(mm):8×20 床单尺寸(mm):8×20 床单尺寸(mm):8×20