RFID tag for patrol reader is Anti-destroyed & Waterproof, anti-corrode, fit for every environment, ... , It is plastic housing with a microchip inside containing a unique serial code which is then related to a check point . 2, Anti-destroyed ... and Long inductive distance 6, Wide temperature scope: -40+707, Not need power supply8, Dimension: φ85mm, Thickness: 10mm9, Weight: 50g10, Original ...