Product Overview

The DO-D1DL 125kHz RFID Reader Module is a compact PCB-mount reader engineered for OEM integration into access control terminals, attendance machines, anti-theft systems, warehousing checkpoints, and metro gate applications. Operating at 125kHz, this module supports EM4100, TK4100, EM4200, and compatible read-only RFID transponders, making it a reliable choice for low-frequency proximity identification in commercial and industrial environments.

Designed for system integrators, security equipment manufacturers, and project contractors who require a stable, small-form-factor reader board with standard Wiegand 26/34 output, the DO-D1DL module provides a consistent read range of 0 to 100mm and supports cable transmission distances exceeding 100 meters. Its dual-color LED and buzzer indicator offer clear visual and audio feedback, simplifying installation and user interaction in high-volume deployment scenarios.

As a factory-direct RFID module from an experienced do rfid reader manufacturer, this product is suitable for wholesale buyers, OEM customers, and distributors seeking long-term supply with batch consistency and fast lead times, ideal for large-scale access control or identification projects.

Product Advantages

• Reliable 125kHz Low-Frequency Reading: Stable detection of EM4100, TK4100, and EM4200 cards and tags in environments where metal interference is limited, ensuring consistent identification performance for door entry, time attendance, and anti-theft systems.
• Compact OEM PCB Design: Measuring just 51mm × 37mm with a 1mm board thickness, the module fits easily into enclosures, handheld devices, gate controllers, or embedded system panels where space is constrained.
• Long Transmission Distance for Wiegand Output: The Wiegand 26/34 interface supports cable runs of 100 meters or more, enabling flexible placement of the reader module relative to the central controller or host system without signal degradation.
• Integrated Visual and Audio Feedback: The onboard dual-color LED (red standby, green read success) and buzzer provide immediate operator confirmation, reducing commissioning time and improving user experience in high-traffic installations.
• Wide Operating Temperature Range: Rated from -10°C to +70°C with storage from -20°C to +80°C, the module is suitable for indoor commercial environments and semi-outdoor protected installations.

Key Features

• Frequency: 125kHz
• Supported Transponders: EM4100, TK4100, EM4200, and compatible 125kHz read-only tags and cards
• Power Supply: DC 12V
• Working Current: 100mA
• Interface: Wiegand 26 / Wiegand 34 (selectable via purple line connection to black)
• Wiegand Transmission Distance: ≥100 meters
• Read Range: 0mm to 100mm (dependent on card quality and environmental conditions)
• Indicators: Dual-color LED (red = standby, green = read success) and buzzer
• Dimensions: 51mm × 37mm × 1mm
• Weight: 20g
• Lead Length: 180mm ± 5mm
• Storage Temperature: -20°C to +80°C
• Working Temperature: -10°C to +70°C

Technical Specifications

Wiring Definition

Industrial Applications

The DO-D1DL 125kHz RFID reader module is widely deployed in the following commercial and industrial scenarios:

• Access Control Systems: Integrated into door controllers and standalone readers for employee entry, visitor management, and restricted area identification in office buildings, factories, data centers, and warehouses.
• Time and Attendance Terminals: Used in wall-mounted or desktop attendance machines to read employee proximity cards for shift tracking and labor cost allocation in manufacturing facilities and corporate campuses.
• Anti-Theft and Security Checkpoints: Deployed in asset protection gates, locker management, and equipment checkout stations where 125kHz card or tag identification is required for logging and authorization.
• Warehousing and Logistics: Applied in internal material tracking, tool check-in/check-out, and pallet identification systems within distribution centers and production sites where simple read-only proximity identification is sufficient.
• Metro and Transit Gates: Utilized in fare collection or staff access gates in public transit environments where reliable 125kHz reading and long Wiegand transmission distance are needed.

OEM / ODM Manufacturing Support

As an OEM/ODM-capable supplier, the do rfid reader manufacturer offers customization options for the DO-D1DL module to meet specific project requirements. Customization possibilities include alternative cable lengths and connector types, adjustment of Wiegand output format presets, integration of customer-specified LED and buzzer behavior, and provision of custom firmware for specialized data formatting or protocol adaptation.

OEM customers receive engineering support during the design-in phase, including datasheets, mechanical drawings, and sample validation to ensure compatibility with existing controller boards or enclosure designs. For large-scale deployments, the factory provides consistent batch production with documented quality inspection procedures, ensuring that every module meets the specified electrical and mechanical parameters.

Distributors and system integrators benefit from private-label options, where the reader module can be branded for resale into target markets, supported by technical documentation and after-sales service from the factory.

Factory Production Advantages

Production of the DO-D1DL module takes place in a facility with established experience in RFID reader board manufacturing, supporting both low-volume prototype runs and high-volume wholesale orders. The factory maintains stable production capacity with lead times typically ranging from 1 to 5 days for sample quantities and 7 to 30 days for bulk orders, depending on order volume and customization requirements.

Key production capabilities include automated SMT assembly, in-circuit testing for electrical performance verification, and functional testing of read range and Wiegand output integrity before shipment. Each module undergoes inspection to confirm frequency accuracy, current consumption within specification, and correct LED/buzzer operation, ensuring that units delivered to distributors and project sites perform reliably out of the box.

For long-term supply agreements, the factory offers scheduled production slots, guaranteed batch consistency, and inventory buffer management to support continuous project rollouts without interruption. Export logistics are managed through established partnerships with DHL, FedEx, TNT, UPS, and sea or air freight forwarders, with the flexibility to use customer-designated shipping accounts.

Bulk Supply & Project Deployment Support

Wholesale buyers, system integrators, and project contractors purchasing the DO-D1DL module in bulk quantities receive priority production scheduling, tiered pricing based on volume, and dedicated technical support for integration and troubleshooting. The module’s standard Wiegand 26/34 interface simplifies connection to most commercial access controllers, PLCs, and embedded systems, reducing engineering effort during installation.

For projects requiring multiple reader points across a site, the long Wiegand transmission distance (≥100 meters) allows central controller placement without the need for signal repeaters, lowering cabling and infrastructure costs. The factory supports project-scale deployments by providing consistent product batches, ensuring that all modules delivered across multiple orders perform identically for uniform user experience and system behavior.

Distributors stocking the DO-D1DL module benefit from supply reliability, packaging options suitable for warehousing and logistics, and access to technical collateral for their own sales and marketing efforts. For OEM customers integrating the module into larger systems, the factory provides design review support and compatibility testing services to accelerate time to market.

FAQ

What types of cards and tags are supported by this reader module?

The DO-D1DL module supports 125kHz read-only transponders using the EM4100, TK4100, and EM4200 chip families, as well as compatible low-frequency proximity cards and tags from various manufacturers. It is not compatible with 13.56MHz or UHF transponders.

What is the maximum cable distance for the Wiegand output?

The Wiegand 26/34 output can reliably transmit signals over distances of 100 meters or more when using suitable cabling, depending on wire gauge and environmental noise conditions.

How do I select between Wiegand 26 and Wiegand 34 output format?

The module defaults to Wiegand 26 output. To select Wiegand 34, connect the purple wire to the black wire (GND). This allows flexibility when integrating with controllers that require either format.

Can I customize the cable length or connector type for my project?

Yes, the factory supports OEM customization including alternative cable lengths, connector types, and wire harness configurations. Contact us with your specific requirements for a feasibility and pricing review.

What is the typical lead time for bulk orders?

Sample orders are typically shipped within 1 to 5 business days. Bulk orders generally require 7 to 30 days depending on volume, customization complexity, and current production schedule. Contact us for current lead time estimates.

Is this module suitable for outdoor or harsh environment use?

The module is designed for indoor or protected semi-outdoor use within a working temperature range of -10°C to +70°C. For outdoor installations where the module will be exposed to moisture or dust, an appropriate IP-rated enclosure is recommended.

Does the factory provide technical documentation and integration support?

Yes, datasheets, mechanical drawings, wiring diagrams, and application notes are available. Engineering support can be provided during the design-in phase for OEM customers and system integrators requiring assistance with integration.