Product Overview
The DO-125EM-USB is a high-performance 125kHz RFID reader designed for industrial and commercial identification applications. This USB interface smart card reader integrates a numeric keypad, making it suitable for environments where data input and contactless card reading are required simultaneously. Manufactured by do rfid reader manufacturer, this device supports EM4100, TK4100, SMC4001 and compatible 125kHz tags, delivering reliable read performance for access control, attendance tracking, and identity verification systems.
System integrators and project contractors choose this reader for its plug-and-play USB connectivity, broad OS compatibility, and stable read distance. Wholesale buyers and distributors benefit from consistent batch quality and long-term supply support, making the DO-125EM-USB a dependable choice for large-scale deployments.
Product Advantages
- Plug-and-Play USB Integration: Connects directly to any computer via USB interface without external power adapter. The reader is recognized as a HID (Human Interface Device), eliminating the need for driver installation on most operating systems.
- Broad Tag Compatibility: Supports EM4100, TK4100, SMC4001 and compatible 125kHz cards and keyfobs, ensuring flexibility across different identification systems and legacy infrastructure.
- Built-in Keypad: Integrated numeric keypad allows manual data entry alongside card reading, enabling PIN code verification, multi-factor authentication, and operator input without additional peripherals.
- Multi-OS Support: Works with Windows XP, Windows CE, Windows 7, Windows 10, Linux, Vista, and Android, making it suitable for diverse IT environments and embedded systems.
- Industrial-Grade Build: ABS housing with a service temperature range of -10°C to +70°C and storage range of -20°C to +80°C, designed for continuous operation in commercial and industrial settings.
Key Features
- Operating frequency: 125kHz
- Output format: 10 digit decimal card number + Enter
- Reading distance: 0–50 mm (card), 0–15 mm (keyfob)
- Read time: less than 200 ms
- Read interval: less than 0.5 seconds
- Interface: USB (HID emulation)
- Power supply: DC 5V via USB bus power
- LED indicator: Blue LED for standby, turns off during tag read
- Buzzer feedback: audible tone on successful read
- Cable length: 1400 mm
- Weight: 100 g (net), 150 g (gross)
- Housing material: ABS
- Dimensions: 135 mm × 85 mm × 28 mm
- Color: Black
- Working humidity: less than 90%
Technical Specifications
| Model | DO-125EM-USB |
| Frequency | 125 kHz |
| Supported Cards | EM4100, TK4100, SMC4001 and compatible 125kHz tags |
| Output Format | 10 digit decimal + Enter |
| Dimensions | 135 mm × 85 mm × 28 mm |
| Interface | USB |
| Power Supply | DC 5V (USB bus-powered) |
| Read Distance (Card) | 0–50 mm |
| Read Distance (Keyfob) | 0–15 mm |
| Service Temperature | -10°C ~ +70°C |
| Store Temperature | -20°C ~ +80°C |
| Working Humidity | < 90% |
| Read Time | < 200 ms |
| Read Interval | < 0.5 s |
| Net Weight | 100 g |
| Gross Weight | 150 g |
| Cable Length | 1400 mm |
| Housing Material | ABS |
| Supported OS | Win XP, Win CE, Win 7, Win 10, Linux, Vista, Android |
Industrial Applications
The DO-125EM-USB RFID reader is deployed across a wide range of commercial and industrial scenarios where reliable 125kHz identification and data entry are required.
- Access Control Systems: Used at entry points for employee identification and door authorization. The built-in keypad supports PIN + card dual-factor authentication, enhancing security for restricted areas.
- Attendance and Time Tracking: Installed at workstations for clock-in and clock-out operations. The USB interface outputs card data directly into attendance software without manual transcription.
- Membership and Loyalty Programs: Deployed at retail counters, fitness centers, and clubs for member identification. Fast read time under 200 ms ensures smooth customer flow during peak hours.
- Asset Identification: Used in warehouses and inventory stations to read asset tags attached to equipment or tools. The USB output integrates with inventory management systems for real-time asset tracking.
- Kiosk and Self-Service Terminals: Embedded into check-in kiosks, library borrowing stations, and self-service lockers where contactless card reading and PIN entry are required.
- Healthcare and Laboratory Identification: Deployed at patient registration desks and specimen tracking points where clean, contactless identification reduces cross-contamination risks.
OEM / ODM Manufacturing Support
do rfid reader manufacturer offers comprehensive OEM and ODM customization for the DO-125EM-USB reader. Buyers can request modifications to housing color, logo printing, cable length, output format, and keypad layout to match their brand identity or application requirements. Custom firmware adjustments, such as output prefix/suffix characters, baud rate, or data formatting, are supported for system integrators who need seamless compatibility with existing software platforms. OEM minimum order quantities are structured to support both pilot projects and full production runs.
Factory Production Advantages
As an experienced RFID hardware manufacturer, do rfid reader manufacturer operates a dedicated production facility with stable manufacturing capacity for 125kHz readers. Each unit undergoes functional testing, read distance verification, and output format validation before packing. The factory maintains batch-to-batch consistency, ensuring that repeat orders deliver identical performance and interface behavior. With over 20 years of manufacturing experience in the RFID industry, the production team understands the procurement requirements of system integrators, distributors, and project contractors who rely on predictable lead times and reliable supply.
Bulk Supply & Project Deployment Support
Wholesale buyers and project managers benefit from bulk order support including volume pricing, consolidated shipping, and coordinated production scheduling. The factory can fulfill large-scale orders for multi-site deployments where hundreds or thousands of readers are required with consistent firmware and hardware revision levels. Sample orders are typically dispatched within 1–5 days, while bulk orders are produced and shipped within 7–30 days depending on quantity and customization requirements. The USB interface and HID emulation ensure that the reader integrates with existing access control software, attendance platforms, and custom applications without additional driver development. For system integrators managing distributed deployments, the reader offers predictable behavior across Windows, Linux, and Android environments, reducing integration testing overhead.
FAQ
Q: What types of tags are compatible with the DO-125EM-USB reader?
A: The reader supports EM4100, TK4100, SMC4001 and compatible 125kHz passive tags, including cards and keyfobs.
Q: Does the reader require driver installation?
A: No. The reader is recognized as a Human Interface Device (HID) and works plug-and-play on Windows, Linux, and Android without additional drivers.
Q: Can the output format be customized for my software?
A: Yes. OEM customization of output format, including prefix/suffix characters and data structure, is available for bulk orders.
Q: What is the typical reading distance for cards and keyfobs?
A: Cards are read at 0–50 mm, and keyfobs at 0–15 mm, depending on tag quality and environmental conditions.
Q: What are the minimum order quantities for OEM customization?
A: MOQ for OEM customization is negotiable based on the complexity of the modification. Contact our sales team for project-specific requirements.
Q: How long does it take to receive samples and bulk orders?
A: Sample orders are typically shipped within 1–5 days. Bulk orders require 7–30 days depending on quantity and customization level.
Q: Which operating systems are supported?
A: Windows XP, Windows CE, Windows 7, Windows 10, Linux, Vista, and Android are all supported.
Q: Can I request a custom keypad layout or housing color?
A: Yes. Housing color, logo printing, keypad layout, and cable length can be customized for OEM orders.
Q: Is the reader suitable for outdoor installation?
A: The reader is designed for indoor commercial and industrial use. For outdoor applications, additional enclosure protection is recommended.
Q: How do I request a quote or technical specification sheet?
A: Contact our team at info@dorfidreader.com with your project requirements for pricing, customization options, and technical documentation.