Description: Injection molding is made of high quality imported engineering plastics. High quality rubber ring is dustproof, waterproof. Contact structure: composite button. Protection method: explosion-proof. Widely used in oil exploration, refining, chemical, and other flammable gas environments. Specification: Material: plastic Size: 5.5x3x9cm/2.16X1.18X3.54inch Working environment temperature: -50 °C~60 °C Head protection rating: IP67 Operating temperature: -60~55 °C Mechanical life 10^6 (times) Panel thickness: 1-6 mm Package Includes: 1 Piece Emergency Stop Push Button Switch Note: The color may have different as the difference display, pls understand. Please allow 0-3mm error due to hand test.Thank you