Key chain also known as key ring, key ring, key chain, key hanging, etc.The material that makes key chain is metal, leather, plastic, wood commonly.It is a daily article that people carry with them.A key ring is an ornament on a key ring.Key chain modeling various, such as cartoon modeling, brand modeling, simulation model, etc., the general material such as copper, aluminum, rubber, plastic system, etc., mainly zinc alloy surface plating nickel or rhodium and other rustproof elements.The key chain has become a small gift.
Key chain parameters:
Working frequency: low frequency/high frequency
Packaging material :ABS
Reading distance: 1 ~ 9m (related to the card reader and the operating environment)
Working mode: read-write
Working temperature: - 40 ° C to 100 ° C
Size: customizable
Chips: TK4100, EM4200, M1, I code2, Ultralight, S70, T5577, etc
Key chain is widely used in: access control, parking, public transport, identity authentication, attendance management, card payment, product labels and so on.
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