eSSL U11-D – Desktop UHF Card Issuer & Professional RFID Reader
The eSSL U11-D desktop UHF card issuer is a compact, professional‑grade encoder and reader for UHF RFID cards and tags. Designed for credential enrollment desks, security system integrators, and access control professionals, it supports EPCglobal Class 1 Gen 2 (ISO 18000‑6C) protocols and is powered entirely through USB. The device functions as a driver‑free, plug‑and‑play unit with keyboard emulation, allowing immediate integration with any access control software, parking management system, or asset tracking platform. With read ranges of up to 2.5 meters (optional antenna) and write distances of up to 1.25 meters, it is the ideal tool for credential issuance desks, vehicle tag programming, and wholesale tag encoding.
📌 What is the eSSL U11-D UHF Card Issuer?
The eSSL U11-D is a compact, USB‑powered UHF RFID desktop reader-and-encoder designed specifically for secure credential management. It operates in the 902–928 MHz (FCC) and 865–867 MHz (ETSI) bands and follows the EPCglobal Class 1 Gen 2 (ISO 18000‑6C) standard, ensuring compatibility with all passive UHF tags and cards. The device reads and encodes UHF credentials – from standard access control cards and key fobs to vehicle windshield tags, laundry tags, and printable UHF stickers – and supports both single‑step enrollment and batch encoding workflows.
The U11-D transmits captured tag data via its USB interface (driver‑free, keyboard emulation) to any connected PC, access control panel, or legacy software. It can also be configured for optional Wiegand 26/34 output. With an integrated circularly polarized PCB antenna (optional 2dBi ceramic antenna upgrade), it achieves a maximum read distance of 2.5 m – enough for desktop use while still being capable of passively scanning shelves or documents. Multi‑region frequency configuration (FCC, ETSI, OPEN) further ensures that the reader can be field‑tuned to comply with local spectrum regulations worldwide.
📊 Technical Specifications – eSSL U11-D
| Product Model | eSSL U11-D (Desktop UHF Card Issuer / Reader‑Writer) |
|---|---|
| RFID Protocol | EPCglobal Class 1 Gen 2 (ISO 18000‑6C) |
| Frequency Range | FCC (NA, SA) : 902‑928 MHz, ETSI (EU) : 865‑867 MHz, OPEN (Custom) : 840‑960 MHz (adjustable) |
| Output Power | Max 27 dBm – 30 dBm (configurable) |
| Read Rate (tags/sec) | > 50 tags/sec (SLR5318) |
| Read Distance (PCB antenna default) | 3 cm – 60 cm |
| Read Distance (2 dBi ceramic antenna optional) | 10 cm – 2.5 m |
| Write Distance | 那样Approximately 50% of the read distance (~1.25 m max)|
| Communication Interfaces | USB 2.0 (HID keyboard emulation, driver‑free), RS232 (optional), Wiegand 26/34 (optional) |
| GPIO | 2 x Input, 2 x Output |
| Antenna (Default) | -10 dBi circularly polarized PCB antenna | Antenna (Optional) | 2 dBi circularly polarized ceramic antenna |
| Power Supply | USB bus‑powered (5 V, ±0.25 V) or external 5 V DC |
| Power Consumption | 2.7 W (27 dBm), 3.6 W (30 dBm), 0.25 W standby |
| Dimensions (L × W × H) | 110 mm × 110 mm × 17 mm |
| Operating Temperature | -10 °C to +55 °C |
| Storage Temperature | -20 °C to +80 °C |
| Indicators | Power LED, card read status LED, built‑in buzzer |
Specifications derived from eSSL Security documentation, Bioteknix data sheet, and official product listings. Specifications are subject to change; refer to the product manual for final details。
🔑 Core Features – eSSL U11-D Desktop UHF Reader & Encoder
Plug‑and‑play device with HID keyboard emulation – instantly recognized by Windows, Linux, and other systems without requiring special drivers. Captured card IDs are automatically typed into any open field, making it compatible with any software that accepts keystrokes.
Supports all passive UHF RFID tags adhering to EPCglobal Class 1 Gen 2 and ISO 18000‑6C standards. Works with access control cards, printable UHF labels, key fobs, vehicle tags, hard tags, and laundry tags.
High‑performance RF engine capable of reading more than 50 tags per second, making it suitable for batch encoding, asset counting, inventory management, and logistics portals.
With the optional 2 dBi ceramic antenna upgrade, the U11‑D can read tags from up to 2.5 meters away, enabling desktop‑enabled scanning of whole shelves, document boxes, or vehicle windshields without moving the reader.
Configurable for FCC (902-928 MHz), ETSI (865-867 MHz), or OPEN (840–960 MHz). Multi‑region support ensures compliance with local spectrum regulations, whether you are deploying in the US, Europe, India, or other RF zones.
Optimized for system integrators: the U11‑D can be configured to output data via Wiegand 26/34‑bit to legacy access control panels. Onboard GPIO (2 inputs, 2 outputs) connects to external LED indicators, buzzers, or triggers for badge printers.
Powered entirely through the USB port (9 – 12 V adapter optional). Ultra‑low power consumption (< 4 W max) and standby mode (0.25 W) reduce energy use when the reader is idle.
Designed for desktop/workstation use, the 110 × 110 × 17 mm housing fits into crowded credentialing desks, vehicle registration stations, and security offices. Its low‑profile design prevents clutter while serving as a daily‑use encoder.
⚙️ How the eSSL U11-D UHF Reader/Encoder Works
The U11-D emits an adjustable‑power RF field (up to 30 dBm) through its integrated circularly polarized antenna (or optional 2 dBi ceramic antenna). The field energizes any passive UHF tag placed within range.
The tag's internal chip powers up from the RF field and backscatters its unique EPC (and optionally user memory) to the reader. The U11-D supports high‑speed multi‑tag reading, capturing over 50 tags per second.
The device processes the backscattered signal, extracts the tag ID, and sends it to the host PC via USB (keyboard emulation). The card ID appears as if typed from a physical keyboard, compatible with any off‑the‑shelf access control software or browser‑based enrollment form.
Using the SDK or compatible encoding software (eTimeTrackLite, custom API), the U11-D can write data to the tag's user memory or lock specific memory banks. This is essential for personalizing access cards, programming vehicle tags, and configuring read‑only tags.
For standalone access panels, the U11-D can output card data via Wiegand 26/34 bit. The GPIO ports can trigger a badge printer, sound an alarm, or illuminate a LED indicator upon successful read/write.
When connected to eSSL‘s eTimeTrackLite or any compatible software, the captured card IDs can be associated with employee profiles, vehicle records, or asset registers. Data can then be exported to leading ERP, HRMS, and payroll platforms, including Spine, GreytHR, HROne, Zoho CRM, Candle, Saral, and Oracle.
🏢 Where to Deploy the eSSL U11-D Desktop UHF Card Issuer
Credential enrollment stations at security help desks. Encode UHF access control cards, key fobs, or temporary passes for new employees, contractors, or visitors – instantly read by eSSL long‑range readers (U5, U10, U14).
Enroll windshield tags for use in automated parking access systems. Write vehicle‑specific UIDs, expiration dates, and user data to UHF tags, reducing queuing time at entry and exit points.
Tag and encode IT assets, tools, and returnable transport items. The U11-D reads passive UHF labels on equipment cases, laptops, and high‑value inventory for real‑time asset tracking.
Enroll UHF wristbands and patient charts at nursing stations, or encode reusable medical instrument tags with sterilization history data.
Program job tracking tags, work‑in‑process carriers, and pallet labels for warehouse portals. The USB keyboard emulation allows simple drop‑and‑write workflows without requiring custom integration.
Issue student IDs and library book tags. The fast multi‑tag reading (≥50 tags/sec) makes batch encoding and bulk inventory scanning practical for large collections.
🌟 Why Choose the eSSL U11-D as Your UHF Card Issuer?
eSSL has decades of experience in RFID and security hardware. The U11-D is built on the same trusted platform used in enterprise access control and parking deployments worldwide.
Unlike other desktop readers, the U11-D communicates via standard USB HID (keyboard emulation). Simply plug it in, open any text field or access control software, and tap a card – the ID appears instantly. No driver installation, no licensing overhead.
Compatible with all passive UHF tags supporting EPC Gen2 / ISO 18000‑6C, including printable UHF paper labels, hard injection‑molded tags, and windshield‑mount vehicle tags. It also supports optional encrypted or read‑only encrypt tags.
At just 110 mm square and weighing only a few hundred grams, the U11-D can be moved between enrollment stations, shared among security desks, or taken to off‑site registration events. USB power eliminates the need for bulky external adapters.
💻 Software Development Kit (SDK) & Enterprise Platform Integration
The eSSL U11-D is accompanied by a full SDK (C++, .NET, Java) that allows developers to read tags, write to user memory, lock blocks, and configure RF power. Integration with eSSL‘s eTimeTrackLite attendance software provides a ready‑to‑use card enrollment module. Card‑holder data can be pushed to leading ERP, HRMS, and payroll platforms, including Spine, GreytHR, HROne, Zoho CRM, Candle, Saral, and Oracle. The USB keyboard emulation is also compatible with any existing proprietary enrollment application that accepts keyboard input.