... is Anti-destroyed & Waterproof, anti-corrode, fit for every environment,Long lifetime: >20 years. commodity:RFID tag for guard tour system1 ... , fit for every environment3, Non-contact EM-ID card 4, Long lifetime: >20 years, can read >350,000 times5, High sensitive ... and Long inductive distance 6, Wide temperature scope: -40+707, Not need ...