VF-747P UHF Fixed RFID Reader(4-Port)
Brand: RFID Reader.io
Model: VF-747P
The 4-Port UHF Fixed RFID Reader is an advanced industrial RFID device designed for high-speed and accurate tag identification. Powered by the Impinj E710 RF core chip, it supports EPCglobal UHF Class 1 Gen 2, ISO 18000-6C, and ISO 18000-6B standards. With versatile communication interfaces, multiple antenna support, and rugged performance, this reader is ideal for logistics, warehousing, manufacturing, retail, and asset management applications.
Backed by RFID Reader.io, this Fixed RFID Reader is designed for system integrators, solution providers, and developers who require reliable UHF RFID performance in industrial and enterprise deployments.
Main features
High-performance Impinj E710 RF core chip
EPC Gen2 / ISO 18000-6C / ISO 18000-6B protocol compatibility
Reads over 800 tags per second with RSSI support
Flexible communication: Ethernet, RS232, RS485, Wiegand, WiFi, optional 4G
4 SMA antenna ports with protection
Industrial durability: IP51, wide operating temperature range
GPIO support for external control and integration
SDK and API available for secondary development
Interface details
1.RJ45 Communication Port
| Version | Description |
|---|---|
| Standard version | Connect to the network directly through the network cable with POE power supply (the switch must support 1, 2, 3, 6 pin power supply). |
| Optional version | Optional Super network port, no POE power supply. |
2.GPIO Interface (Double layer 10-pin)
Terminal definition (left to right):
| Pin | Function | Pin | Function |
|---|---|---|---|
| DO1- | Relay | DO1+ | Relay |
| DO2- | Relay | DO2+ | Relay |
| DO3- | Relay | DO3+ | Relay |
| DO4- | Relay | DO4+ | Relay |
| DI2 | Trigger | DI1 | Trigger |
| WDI_1 | Wiegand26 | WDI_0 | Wiegand26 |
| WD2_1 | Wiegand34 | WD2_0 | Wiegand34 |
| RS485- | RS485+ | ||
| NC | NC | ||
| Earth | Earth |
Special note: The “GND” in GPIO changes right to the RJ45 network port.
Indicator light and buzzer
1.Read Card Indicator Light and Buzzer Prompts
- The LED indicator blinks to indicate the working status and buzzer mode.
- Read distance: 0 ~ 25000 mm
- Output power: 0 ~ 33 dBm adjustable
- Convenient for users to control the working state of the product.
2.LED Indicator Meaning
| Color | Status |
|---|---|
| Red light | Indicates that the power indicator is on and steady red. |
| Green light | RF indicator. Blinking green: the reader is receiving or sending data/commands. |
| Yellow light | Running indicator. Blinking yellow indicates that the device is running normally. |

Software Tools and SDKs
Provide VUP software, more convenient management
Provides APl development kits and C and Java application routines
Back-end data management is easier

Application areas
RFID Reader.io enables integrators, engineers, and RFID solution providers to build advanced inventory, access control, and asset tracking systems with flexibility and scalability.
Warehouse and logistics management
Production line and manufacturing process tracking
Retail inventory and smart store operations
Enterprise asset and equipment management
Library and archival tracking
Performance testing

Specifications
1.Performance Parameters
| Item | Specification |
|---|---|
| RF Core Chip | Impinj E710 |
| Protocols | EPCglobal UHF Class 1 Gen 2 / ISO 18000-6C / ISO 18000-6B |
| Operating Frequency | 902–928 MHz / 865–868 MHz (regional adjustment) |
| RF Output Power | 33 dBm ±1 dBm |
| Power Adjustment | 1 dBm step (via VANCH software) |
| Receiving Sensitivity | < -85 dBm |
| Tag Reading Speed | > 800 tags/second |
| Firmware Upgrade | Expandable upgrade mechanism |
| Test Software | VANCH VUPv1.0 |
2.Reading Distance
| Item | Specification |
|---|---|
| Far-field Antenna | 60–10,000 mm |
| Near-field Antenna | 20–350 mm |
| Write Distance | 0–10 m (depending on configuration, gain, tag type) |
| Tag RSSI | Supported |
3.Antenna & I/O
| Item | Specification |
|---|---|
| Antenna Ports | 4 external SMA ports |
| Antenna Protection | Supported |
| GPIO | 2 inputs, 4 outputs (DC24V/2A, AC124V/2A) |
4.Communication
| Item | Specification |
|---|---|
| Wired Interfaces | RJ45 (10/100M Ethernet), RS232, RS485, Wiegand26/34 |
| Protocols | VUP, ModbusTCP, ModbusRTU, TCP/UDP |
| Wireless Options | WiFi (IEEE 802.11 b/g/n), Bluetooth 4.0, 4G (optional) |
| Application Software Interface | API development kit (VC, VB, Java routines) |
5.Mechanical & Electrical
| Item | Specification |
|---|---|
| Dimension | 138(L) × 138(W) × 38(H) mm |
| Weight | ~1.32 kg (complete set) |
| Power Supply | 220V AC input, +12V/3A DC output |
| Power Consumption | Max 3W, startup current 1A |
| RF Output Interface | SMA type connector |
6.Environmental & Compliance
| Item | Specification |
|---|---|
| Humidity | 5%–95% (non-condensing) |
| Protection Rating | IEC IP51 |
| Operating Temperature | -20°C to +85°C |
| Storage Temperature | -40°C to +85°C |
| Certificates | FCC, CE |
FAQ
Q1: What standards does this reader support?
A1: EPCglobal UHF Class 1 Gen 2, ISO 18000-6C, and ISO 18000-6B.
Q2: How many antennas can be connected?
A2: Up to 4 SMA antennas with protection.
Q3: What is the maximum read distance?
A3: With a far-field antenna, up to 10 meters depending on configuration and tag type.
Q4: Does it support wireless communication?
A4: Yes, WiFi and optional 4G modules are available.
Q5: Can it integrate with ERP/WMS?
A5: Yes, it supports ModbusTCP, ModbusRTU, TCP/UDP, and SDK/API for integration.























