125KHz RFID Reader Writer EM4100 Portable Handheld Copier Reader Writer Duplicator Keyfob Key benefits Read, write, and duplicate 125KHz EM4100 proximity cards and keyfobs with a single portable device. Solve lost or damaged access cards quickly by cloning an existing tag on site, reducing downtime for staff and guests. Compact, handheld form lets you carry and use the device anywhere without special tools or a computer. Simple, direct operation speeds up routine tasks such as issuing spare cards or preparing batches of keyfobs. What this device does Reads unique ID codes from 125KHz EM4100 compatible RFID proximity cards and keyfobs. Writes or copies those ID codes to blank EM4100 compatible tags or keyfobs to create functional duplicates. Acts as a standalone duplicator for straightforward tag management and replacement. Important attributes Function: Read, write, duplicate 125KHz low frequency RFID tags that use the EM4100 protocol. Compatibility: Works with standard 125KHz EM4100 proximity cards and compatible keyfobs. Size and portability: Handheld, pocket friendly design for use in offices, facilities, and on site. Build and handling: Durable, purpose built housing for routine use in administrative and maintenance environments. Performance: Reliable identification and copying of EM4100 tag IDs to speed up replacement and issuance tasks. Why customers need this product Reduce disruption when access cards are lost by making immediate replacements without waiting for centralized programming. Save time for small businesses, property managers, event staff, and maintenance teams by handling card duplication onsite. Manage access inventory efficiently by creating extras for temporary staff, contractors, or visitors. Practical use scenarios Office facility management: Duplicate an employee access card to provide a temporary replacement during a lost card incident and restore normal access quickly. Property management and rentals: Prepare sets of keyfobs for tenants or short term guests before they arrive, eliminating check in delays. Event access control: Produce multiple keyfobs for staff and vendors that need temporary access during an event, then reclaim and reprogram tags afterward. Notes and responsible use Designed for authorized use with compatible EM4100 tags only. Ensure you have permission to copy access credentials before creating duplicates.