- Dual-frequency RFID functionality Equipped with 125KHz T5577 + 13.56MHz EM4305, these composite key tags support dual chip frequency for versatile access control applications across different systems.
- High compatibility and rewritable design Featuring rewritable IC+ID technology, these tags allow repeated programming and are compatible with various access control systems using EM4100/TK4100 chips.
- Durable and waterproof construction Made from ABS material, these keyfobs are waterproof and built to withstand harsh environments, ensuring long-term performance in diverse conditions.
- Wide operating temperature range Designed for reliable operation in extreme conditions, the tags function efficiently within a temperature range of -40 to 85°C.
- Available in blue.

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