The TK4100 proximity ID card is based on SMC4100 IC connected with a few laps, which are then embedded into plastic. No batteries required. This card is read-only, 40-bits unique number in the Manchester code. TK4100 is compatible with EM4100. These cards are primarily used in access control applications and other identity authentication. Frequency : 125KHz Protocol : ISO10536 (125KHz EM4100 Compatible) Unique ID : 40bits Material : PVC Temperature : -20°C ~ +50°C Dimension : 85.6 × 54 × 0.86 ( mm )




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