Catalog > Internet of Things (IOT) Related Products > More Platforms Catalog > Consumer Electronics > Kits > DIY Kits Proximity Smart Tag Proximity Smart Tag BMT RFID KEY 125KHZ - 5/PKT EM4100 Chip, 125KHZ RFID Key Fob Passive, Proximity Smart Tag 36.66 ZAR inc for 1 Each 43 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Overview 125Khz Door Keeper keys, EM4100 Standard protocol, only read, cannot write. Available in random colors. Use it together with 125Khz EM4100 RFID Card Read Module RDM630 UART Output Arduino shield. Specifications Technology Type: Key Fob Proximity Smart Card Standard: ISO11785 Frenquency: 125KHZ Chips: EM4100 Power: Passive Card Function: Identification, Payment, Encrypt/DEcrypt Contours: ISO Card Chip Type: Contactless ID Card Application Field: Access Control, Time Attendance