{"product_id":"handheld-rfid-125khz-em4100-card-copier-reader-writer-programmer","title":"Handheld RFID 125kHz EM4100 Card Copier Reader Writer Programmer","description":"\n\u003ch2\u003eHandheld RFID 125kHz EM4100 Card Copier, Reader \u0026amp; Writer Programmer\u003c\/h2\u003e\n\u003cp\u003eTake control of your access card management with this compact \u003cstrong\u003eHandheld RFID 125kHz EM4100 Card Copier\u003c\/strong\u003e. Whether you need to duplicate key fobs, proximity cards, or ID cards for home, office, or building access systems, this all-in-one reader, writer, and programmer fits right in your pocket and is ready to use straight out of the box.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3-in-1 Functionality:\u003c\/strong\u003e Read, write, and duplicate 125kHz EM4100 RFID cards and key tags with a single device.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSimple One-Button Operation:\u003c\/strong\u003e Slide the switch upward to power on — the red LED stays lit, while the green and yellow LEDs flash once and the buzzer beeps once to confirm a successful startup.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCopy Cards Effortlessly:\u003c\/strong\u003e Place the source card on the reader to capture its data, then press the write button to duplicate the data onto a blank writable card or tag.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlank Card Writing:\u003c\/strong\u003e With no source card present, press the write key to program a blank card with all-zero data — great for testing or initializing new tags.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Ergonomic Design:\u003c\/strong\u003e Measuring just 117 × 70 × 30 mm (4.6 × 2.75 × 1.2 in), it fits comfortably in your hand and slips easily into a bag or pocket.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3 Color Options:\u003c\/strong\u003e Available in your choice of 3 colors to suit your personal style.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible with EM4100 Standard:\u003c\/strong\u003e Works with a wide range of 125kHz read-only and writable proximity cards and key fobs commonly used in access control systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower On:\u003c\/strong\u003e Push the switch on the right side upward. The red LED illuminates, and the green and yellow LEDs flash once — startup confirmed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRead a Card:\u003c\/strong\u003e Place the source RFID card or fob against the reader. The device will read and store the card data.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWrite \/ Duplicate:\u003c\/strong\u003e Place a blank writable card on the device, then press the right write button. The data will be copied to the new card.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVerify:\u003c\/strong\u003e Re-read the newly written card to confirm the duplication was successful.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 125kHz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupported Protocol:\u003c\/strong\u003e EM4100 (and compatible formats)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 117 × 70 × 30 mm \/ 4.6 × 2.75 × 1.2 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColors Available:\u003c\/strong\u003e 3 options\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndicator Lights:\u003c\/strong\u003e Red, Green, Yellow LED + Buzzer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ccb-flat-round-spacer-beads-diy-jewelry-making\"\u003e4\/6mm CCB Flat Round Spacer Beads DIY Jewelry Making 100-200pcs\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/round-aluminum-wire-diy-jewelry-making-1mm-3mm\"\u003eRound Aluminum Wire 1mm–3mm | DIY Jewelry Making Wire\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/gold-silver-drawstring-jewelry-gift-bags-pouches-50pcs\"\u003e50pcs Gold \u0026amp; Silver Drawstring Jewelry Gift Bags 7x9 9x12cm\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What RFID card types does this 125kHz EM4100 Card Copier support?\u003c\/h4\u003e\n\u003cp\u003eA: This RFID card copier is designed for 125kHz frequency cards and tags using the EM4100 protocol, which is one of the most widely used standards in proximity-based access control systems. This includes common door access cards, key fobs, and proximity ID tags that operate at 125kHz. Please verify your existing cards use the EM4100 (or compatible) standard before purchasing.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I start up and operate the RFID 125kHz card programmer?\u003c\/h4\u003e\n\u003cp\u003eA: To power on the device, push the switch on the right side upward. The red LED will remain lit, and the green and yellow LEDs will flash once while the buzzer sounds once — this confirms a successful startup. To copy a card, place the source card against the reader to capture its data, then place a blank writable card on the device and press the right-side write button to complete the duplication. If no source card is present during startup, pressing the write key will program a blank card with all-zero data.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I use this RFID copier for office or home access control systems?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — this handheld RFID reader writer programmer is ideal for duplicating 125kHz EM4100 access cards used in residential buildings, offices, gyms, parking systems, and other locations that rely on standard 125kHz proximity card access control. Always ensure you have proper authorization before duplicating any access credential.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the RFID card copier come with blank writable cards or tags?\u003c\/h4\u003e\n\u003cp\u003eA: Package options may include writable blank tags (5–10pcs depending on the variant selected). Check the product listing variant options at the time of purchase to confirm what is included in your chosen configuration.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What RFID card types does this 125kHz EM4100 Card Copier support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This RFID card copier is designed for 125kHz frequency cards and tags using the EM4100 protocol, which is one of the most widely used standards in proximity-based access control systems. This includes common door access cards, key fobs, and proximity ID tags that operate at 125kHz. 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Check the product listing variant options at the time of purchase to confirm what is included in your chosen configuration.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0i45ne-c8.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/0i45ne-c8.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Handheld RFID 125kHz EM4100 Card Copier Reader Writer Programmer\", \"item\": \"https:\/\/0i45ne-c8.myshopify.com\/products\/handheld-rfid-125khz-em4100-card-copier-reader-writer-programmer\"}]}\u003c\/script\u003e","brand":"Zpaxo","offers":[{"title":"10 keychain","offer_id":54271781404982,"sku":"14:173#10 keychain","price":30.2,"currency_code":"USD","in_stock":true},{"title":"5-card set","offer_id":54271781437750,"sku":"14:10#5-card set","price":30.23,"currency_code":"USD","in_stock":true},{"title":"No accessories","offer_id":54271781470518,"sku":"14:350852#No accessories","price":15.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/7774\/3158\/files\/Sc7d2e4b24df04aea982ba7c09124504eO.webp?v=1784760524","url":"https:\/\/zpaxo.com\/products\/handheld-rfid-125khz-em4100-card-copier-reader-writer-programmer","provider":"Zpaxo","version":"1.0","type":"link"}