Function: waterproof, anti-vibration, anti-. The outer shell is made of high quality material and does not rust. Simple and convenient operation, Small size, buckle, portable. Application scope: access control system; biometric tracking and identification system; warehousing logistics system; security patrol system; hotel, community card system; identification system security patrol, sauna bath door lock, electronic door lock, access control intercom, bank, Communication, railway transportation, transportation and many other fields; electronic wallets, smart water and electricity meter reading systems and many other industries., Weight: 0.09479877266 pounds, Manufacturer: melairo