... batteries in time.6,Emergency Cards or mechanical keys are used to open doors in special situtions ... purview is really clear.Specification:1,Card Type: TEMIC or Mifare Card;2,Make use of the inductive ... Chip. Power Consumption: satic current:≤15 μA, card reading current:≤20 mA, lock opening current: about ... a suit of software system of making cards, a card-maker, cards, locks.Other:1,10pcs / carton2, ...