Key fob Atlo ATLO-557NR/W RFID proximity tag 13.56 MHz NXP chip

Atlo ATLO-557NR/W is a compact RFID proximity key fob operating at 13.56 MHz with an NXP-compatible chip. Designed for access control and identification, this passive tag stores credential data for secure entry systems, time attendance, and asset tagging. Its durable housing and keyring-friendly shape make it practical for everyday carry on keychains, staff IDs, and visitor management solutions in offices, buildings, and facilities.

Advantages

The key fob offers reliable read/write performance at 13.56 MHz with compatibility for many systems using NXP-compatible contactless chips. Its passive design requires no internal power source, reducing maintenance and enabling long-term use. The compact, robust casing resists daily wear while remaining lightweight and convenient to attach to keys or badges. Data storage on the chip supports secure credential handling for varied access control workflows.

Suitable for

• Electronic door access control systems
• Time and attendance tracking
• Employee and visitor identification
• Asset tagging and inventory control
• Membership and loyalty systems requiring contactless credentials

Key specifications

• Operating frequency: 13.56 MHz
• Chip type: NXP-compatible contactless RFID chip
• Power: Passive (no internal battery)
• Form factor: Key fob with keyring hole
• Typical use: Read/write credential storage for access and identification

How to use

Present the key fob to a compatible 13.56 MHz reader at the required distance defined by the access control system. Programming and credential encoding are performed using a supported encoder or access control software that writes user credentials to the tag's memory. For initial setup, follow the reader or system supplier's instructions to enroll the tag to a user profile, assign permissions, and verify read range and response. No battery replacement or special maintenance is required due to the passive design.

Usage recommendations

Store and handle the key fob on a keyring or badge holder to minimize loss and mechanical damage. Avoid strong magnetic fields and prolonged exposure to extreme temperatures or direct moisture, which can affect reader performance. When integrating into an access system, test read reliability at typical approach angles and through common materials (pockets, badge holders) to ensure consistent operation.