... in severe environment such as high temperature, high press, chemical corrosion, etc Frequency:13.56mhz;125KHZChip: Mifare1, I-CODE-2, EM4100 ... option: Diameter 16/20/25mm easy installed on the clothes Protection Rate: IP67, IP68 Two times Injection moldingTemperature: -10°C to ... EM4102/4100 Application: Widely used in Laundry. Waterproof, Anti-dust, Corrosion protection washable button tag