125kHz EM4100 LF RFID Card Reader Module – Industrial-Grade Access Control & Identification Solution
Product Overview
System integrators, access control installers, attendance system providers, and warehouse automation contractors regularly require a reliable, cost-effective low-frequency RFID reader module that integrates seamlessly into existing Wiegand-based infrastructures. The DO-D1DL 125kHz LF RFID card reader module from do rfid reader manufacturer is designed specifically for these commercial and industrial deployment scenarios. Operating at 125kHz, it reads EM4100, TK4100, and compatible ID cards with a read range of 0mm to 100mm, making it suitable for door access, employee time tracking, anti-theft systems, and metro gate control. As a wholesale-oriented reader module, it supports bulk procurement for large-scale projects where consistent performance and stable supply are critical. The module outputs Wiegand 26 or Wiegand 34 protocol, ensuring compatibility with most mainstream access control panels and controllers used by system integrators worldwide.
Product Advantages
When procuring RFID reader modules for commercial projects, buyers need a solution that balances read reliability, interface compatibility, and cost efficiency. The DO-D1DL addresses these requirements directly. Its Wiegand 26/34 output allows direct connection to standard access control boards without additional conversion hardware, reducing integration complexity. The 100mA power draw at 12V DC means it can be powered by existing access control power supplies without overloading the system. With a transmission distance exceeding 100 meters for the Wiegand signal, installers can locate the reader module far from the controller, which is particularly useful in large facility deployments. For distributors and wholesalers, the module’s support for widely used EM4100 and TK4100 cards ensures broad market applicability across geographies and end-user segments. The do rfid reader manufacturer produces this module with batch consistency in mind, so bulk orders maintain identical read performance and wiring behavior across all units.
Key Features
- Standard Wiegand 26/34 Output – Directly interfaces with most access control panels, eliminating the need for protocol converters. The output format can be switched to WG34 by connecting the purple wire to ground, giving integrators flexibility.
- Wide Read Range – 0mm to 100mm read distance depending on card type and environmental conditions, sufficient for proximity card applications in access control and time attendance.
- Dual-Color LED & Buzzer Indication – Red LED indicates standby mode; green LED and buzzer confirm successful read. This provides clear visual and audible feedback for end users.
- Compact Board Design – Measuring 51mm × 37mm × 1mm with a weight of only 20 grams, the module fits inside standard reader enclosures or custom housings.
- 180mm Cable Length – Pre-wired leads simplify installation and reduce wiring time during field deployment.
- Wide Operating Temperature Range – -10°C to +70°C storage temperature from -20°C to +80°C, suitable for indoor and sheltered outdoor installations.
- Low Power Consumption – 100mA operating current at 12V DC minimizes load on system power supplies.
Technical Specifications
| Frequency | 125kHz |
| Support Cards | EM4100, TK4100, and compatible 125kHz ID cards |
| Working Voltage | DC 12V |
| Working Current | 100mA |
| Interface | Wiegand 26 / Wiegand 34 (selectable via wiring) |
| Transmission Distance | WG26/34 ≥ 100 meters |
| Read Range | 0mm – 100mm (dependent on card type and environment) |
| Storage Temperature | -20°C ~ +80°C |
| Working Temperature | -10°C ~ +70°C |
| Dimensions | 51mm × 37mm × 1mm |
| Weight | 20g |
| Cable Length | 180mm ± 5mm |
| Indicators | Dual-color LED (Red standby / Green read success) + Buzzer |
Wiring Definition
| Black | GND |
| Red | VCC (12V) |
| Purple | Wiegand 26 / Wiegand 34 (connect to Black for WG34 output) |
| Grey | Green light and buzzer long ring control |
| White | Wiegand D1 |
| Green | Wiegand D0 |
Industrial Applications
The DO-D1DL 125kHz RFID reader module is deployed across a range of commercial and industrial environments where reliable proximity card identification is required. In access control systems, it reads standard EM4100 cards to grant or deny entry to office buildings, factories, data centers, and residential communities. For time and attendance tracking, the module integrates with standalone or networked terminals to record employee check-in and check-out events. In anti-theft and security systems, it works with alarm panels to arm or disarm zones using card authentication. Warehouse and logistics systems use the module for identity verification at restricted storage areas. Metro and transit gate controllers also deploy this module for fare collection and passenger access. System integrators and project contractors choose this module because of its straightforward Wiegand interface, allowing rapid integration with third-party controllers and backend software without proprietary lock-in.
OEM / ODM Manufacturing Support
Do rfid reader manufacturer offers comprehensive OEM and ODM customization for the DO-D1DL reader module. Buyers requiring custom firmware behavior, specific output formats beyond standard Wiegand 26/34, or modified wiring pinouts for proprietary controllers can request adjustments during the development phase. The factory supports custom PCB color, connector type changes, cable length modifications, and enclosure design integration. For ODM projects, the manufacturer can adapt the module’s electrical characteristics to match existing system voltage tolerances or add filtering for electrically noisy environments. OEM buyers in the access control, security, and automation industries benefit from private labeling and packaging options that align with their brand identity. The production team works with bulk customers to define acceptance criteria and test procedures before mass production begins.
Factory Production Advantages
With over 20 years of continuous manufacturing experience in RFID card readers and access control products, do rfid reader manufacturer operates a production facility capable of stable, large-volume output. The factory maintains consistent quality across production batches through standardized assembly processes and in-house quality checks at multiple stages. For bulk wholesale orders, the manufacturer can scale from small sample runs to container-volume shipments while maintaining the same electrical and mechanical specifications. Production lead time for standard modules is typically 3–7 days for up to 5,000 units and 7–15 days for up to 100,000 units, allowing distributors and project integrators to plan deployments with predictable scheduling. The factory’s supply chain for raw materials, IC components, and PCB fabrication is established over years of operation, reducing the risk of supply interruptions for long-term wholesale cooperation.
Bulk Supply & Project Deployment Support
Wholesale buyers, system integrators, and distribution partners benefit from bulk pricing and dedicated project support when sourcing the DO-D1DL module from do rfid reader manufacturer. For large-scale deployments such as multi-building access control upgrades, national attendance system rollouts, or transit infrastructure projects, the manufacturer provides consistent batch-to-batch compatibility so that every module in the deployment performs identically. Technical documentation, wiring diagrams, and integration support are available to assist engineers during the design-in phase. The manufacturer also supports sample requests for pre-production evaluation, allowing procurement teams to verify read range, interface behavior, and environmental tolerance under actual operating conditions. Shipping options include express (DHL, FedEx, TNT, UPS, EMS) for sample and small orders, and sea or air freight for bulk commercial shipments.
Frequently Asked Questions
Q: How do I place a wholesale order for the DO-D1DL reader module?
A: Send your requirements including quantity, delivery timeline, and any customization needs to the do rfid reader manufacturer. A formal quotation and production schedule will be provided within 24 hours for standard configurations.
Q: What payment methods are accepted for bulk orders?
A: Trade Assurance, T/T bank transfer, Paypal, and Western Union are accepted for both sample and bulk orders.
Q: Can I get a sample before placing a bulk order?
A: Yes, free samples are available. The buyer covers the shipping cost. This allows you to verify read range, Wiegand output behavior, and mechanical fit before committing to volume production.
Q: What is the typical lead time for bulk production?
A: For standard DO-D1DL modules, lead time is 3–7 days for orders up to 5,000 units and 7–15 days for orders up to 100,000 units. Custom OEM/ODM orders may require additional development time depending on the modification scope.
Q: Can the output format be customized to something other than Wiegand 26/34?
A: Yes, as an OEM manufacturer, do rfid reader manufacturer can adapt the output protocol to meet specific controller requirements. Contact the factory with your interface specifications for feasibility assessment.
Q: Is the module compatible with 125kHz EM4100 cards from other suppliers?
A: Yes, the DO-D1DL reads standard EM4100, TK4100, and compatible 125kHz proximity cards regardless of the card manufacturer, making it a drop-in replacement for existing Wiegand-based systems.
Q: What warranty coverage is provided for wholesale orders?
A: The standard warranty period is 2 years from the date of shipment, covering manufacturing defects not caused by physical damage, improper wiring, or electrical overstress. Extended warranty terms are available for long-term supply agreements.
Q: How is the module packaged for bulk shipment?
A: Modules are packed in anti-static bags with protective foam or cardboard dividers to prevent damage during transit. Custom packaging with your brand labeling is available for OEM orders.