VM-68 RFID Module(8 ports)
Brand: RFID Reader.io
Model: VM-68
The VM-68 Indy Module by RFID Reader.io is a high-performance RFID module based on the American Impinj E710 RF chip. It adopts a dual-CPU architecture and a high-efficiency multi-tag recognition algorithm, delivering fast processing, stable operation, and excellent thermal management. Designed for system integrators, solution providers, developers, and engineers, it is an ideal core component for professional UHF RFID applications that require reliable, continuous operation.
Key Advantages
High-performance Impinj E710 RF core
Dual-CPU design separates tag polling and data management
Advanced multi-tag algorithm (>700 tags/sec)
Two inventory modes: cache / real-time
Dual backup RF power calibration for accuracy and reliability
Optimized heat-dissipation structure, stable 24/7
Supports secondary development via UART / GPIO interfaces
Product Features
Eight RF channels with SMA connectors
EPC Global UHF Class 1 Gen 2 / ISO 18000-6C protocol compliance
Output power 0–33 dBm, accuracy ±1 dB
Receiving sensitivity < –88 dBm
Stand-alone or intensive working mode
Ambient temperature monitoring and antenna protection
External heat sink air-cooling design
The RFID Reader.io VM-68 Indy Module enables integrators and developers to build high-performance RFID systems, suitable for demanding applications such as industrial automation, logistics tracking, smart warehouses, and asset management.
Application scenarios
Industrial automation and production line tracking
Smart warehouse and logistics management
Asset and tool management in factories
Vehicle access control and parking systems
Retail inventory and anti-theft solutions
Library and archive management
Software & Development
RFID Reader.io provides supporting VUP software and DLL dynamic link libraries, supporting secondary development in languages such as C and Java, allowing engineers to quickly integrate into existing systems and achieve flexible background data management and expansion capabilities.
Technical parameters
1.Performance Parameters
| Item | Specification |
| RFID Chip | Impinj E710 |
| Air Interface Protocol | EPCglobal UHF Class 1 Gen2 / ISO18000-6C |
| Working Spectrum Range | 902–928 MHz, 865–868 MHz |
| Frequency Range | 860–960 MHz (adjustable by country/region) |
| Frequency Modulation | FHSS or fixed-frequency, software configurable |
| RF Output Power | 0–33 dBm (RF output +20 ~ +30 dBm; 50 Ω load) |
| Output Power Accuracy | ±1 dB |
| Output Power Flatness | ±0.2 dB |
| Receiving Sensitivity | < –88 dBm |
| Peak Inventory Speed | >700 tags/sec |
| Tag Buffer Size | 800 tags @ 96-bit EPC |
| Tag RSSI | Supported |
| Antenna Protection | Supported |
| Ambient Temperature Monitoring | Supported |
| Working Mode | Standalone / Intensive |
| Firmware Upgrade | Secure upgrade mechanism, extendable |
2.Antenna & I/O
| Item | Specification |
| Antenna Connectors | 1 / 2 / 4 / 5 / 6 / 7 / 8 TNC connectors optional |
| Communication Interfaces | UART (3.3 V), RS232, RS485, RJ45 10M/100M Ethernet, Wiegand26/34 |
| Communication Baud Rate | 9600 ~ 115200 bps (UART default 115200) |
| GPIO | 2 inputs, 2 outputs (3.3 V); 2 opto-isolated inputs, 2 opto-isolated outputs |
| Buzzer Drive | Output current >50 mA |
| RS-485 Direction Control | GPIO5 |
| Tag RSSI | Supported |
3.Mechanical & Electrical
| Item | Specification |
| Operating Voltage | 4.5 V – 5.5 V (recommended 4.6–4.8 V) |
| Standby Current | 50 mA (EN high level) |
| Sleep Current | <100 µA (EN low level) |
| Working Current (@5V, 33 dBm, multi-tag, 25°C) | 300 mA ~ 1.3 A ±10% (peak 2.5 A) |
| Maximum Communication Rate | 115200 bps (recommended) |
| Cooling Method | External heat sink + air cooling |
| Connector (15 Pin, 1.25 mm pitch) | Power, GND, UART, GPIO, buzzer, RS485 direction, EN |
| FPC Connector (30 Pin, 0.5 mm pitch) | Power, GND, UART, GPIO, buzzer, RS485, EN |
| Impedance Matching | 50 Ω |
| Precautions | Ambient temp >60°C not suitable for full load; RF output >30 dBm increases peak current/temp; voltage must not exceed 5.5 V |
4.Environmental & Compliance
| Item | Specification |
| Operating Temperature | –20 °C ~ +65 °C |
| Storage Temperature | –40 °C ~ +85 °C |
| Ambient Humidity | 5%RH ~ 95%RH (no condensation) |
| Supported Regions | US, Canada (FCC); Europe (ETSI EN302208, with/without LBT); China, Japan, Korea, Malaysia, Taiwan |
| Compliance / Standards | EPCglobal UHF Class 1 Gen2, ISO18000-6C |
FAQ
Q1: What development interfaces does the module support?
A1: It provides a UART (3.3 V) interface and GPIO (2 inputs / 2 outputs) for secondary development.
Q2: How should I handle heat dissipation?
A2: For long-term full-load operation, attach the supplied heat sink and ensure proper airflow.
Q3: Can the RF output power be adjusted?
A3: Yes, the RF output power can be set from 0 dBm to 33 dBm via configuration commands.
Q4: What inventory modes are available?
A4 : The module offers cache mode (deduplicated) and real-time mode (instant upload).
Q5: How to ensure long service life?
A5: Operate within the rated voltage (≤5.5 V) and temperature (≤65 °C) and avoid prolonged overload above 30 dBm output.
