JP-7941E RFID Read Write Module Wiegand 125KHz Low Frequency TTL UART

JP-7941E Card Reader Module

Product Overview

The JP-7941E Card Reader Module is a compact, industrial-grade 125kHz RFID reader module designed for reliable proximity card reading in access control, time attendance, and identity verification applications. Operating on DC 5V with typical current consumption of just 40mA, this module delivers an exceptional read range of over 8cm for 125kHz compatible cards — outperforming many standard readers in its class. Featuring an integrated antenna in a space-saving 47mm × 26mm × 5mm form factor, the JP-7941E supports both Wiegand and UART (TTL) interfaces, enabling seamless integration with legacy access control panels and modern embedded systems. With industrial-grade reliability rated for -20°C to 70°C operation, the JP-7941E is the ideal choice for OEMs and system integrators requiring a cost-effective, high-performance 125kHz reader module for outdoor and demanding indoor installations.

Key Advantages

• Exceptional Read Range: Achieves over 8cm read distance — significantly longer than standard 3–5cm readers, reducing user positioning requirements and improving throughput in high-traffic entry points.

• Ultra-Low Power Consumption: Draws just 40mA typical current — ideal for power-sensitive deployments, battery-backed systems, and installations where multiple readers share a limited power supply.

• Integrated Antenna Design: Built-in antenna eliminates the need for external antenna design, tuning, or matching circuits — plug-and-play integration that reduces design time and engineering effort.

• Compact Form Factor: Measures only 47mm × 26mm × 5mm with integrated antenna — fits easily into slim readers, keypads, and space-constrained devices without compromising read performance.

• Dual Interface Options: Supports Wiegand and UART (TTL) interfaces — enabling direct connection to legacy Wiegand-based controllers and modern embedded systems.

• Industrial-Grade Reliability: -20°C to 70°C operating range — suitable for outdoor access control in freezing climates, hot industrial facilities, and installations without climate control.

Why Choose This Module?

• Best-in-Class Read Range for 125kHz Readers: The JP-7941E's >8cm read range sets it apart from standard 125kHz modules that typically read at 3–5cm. This extended range enables faster access in high-throughput environments — users can tap or wave cards without precise alignment, reducing bottlenecks at busy entry points and improving the overall user experience in office buildings, parking facilities, and public venues.

• Integrated Antenna — No External Design Required: The built-in antenna eliminates the need for external antenna design, matching circuits, and RF layout expertise — common difficulties with raw reader chips. This dramatically reduces design complexity and PCB area, and ensures consistent read performance across production batches. Simply power it up and start reading.

• Low-Power Design for Large-Scale Deployments: At just 40mA, this module consumes significantly less power than competing readers. For installations with dozens or hundreds of readers — office campuses, residential complexes, or industrial facilities — this translates to lower power supply costs, simpler cabling, and reduced heat generation.

• Effortless Integration with Legacy and Modern Systems: The combination of Wiegand (the industry standard for access control panels) and UART interfaces provides universal compatibility. Existing Wiegand-based controllers connect directly — no protocol conversion, no additional hardware. For embedded designs, UART provides direct microcontroller communication, simplifying integration across diverse host platforms.

• Industrial-Grade Reliability for 24/7 Deployment: The -20°C to 70°C operating temperature range ensures reliable performance in diverse environments — from freezing outdoor installations in northern climates to hot industrial facilities. This robust design reduces field failures, lowers maintenance costs, and extends product lifespan, making the JP-7941E the trusted choice for system integrators and OEMs building access control solutions for demanding real-world conditions.

JP-7941E RFID Read Write Module Wiegand 125KHz Low Frequency TTL UART Images