The Ebyte M31 Series is a robust, LoRa-enabled distributed I/O system designed for harsh industrial environments, featuring a versatile range of analog and digital control modules including 4AI/4AO, 8DI/8DO, and 4DI/4AI/4DO configurations to provide reliable long-range wireless remote acquisition and control for complex automation networking.
Series Product Variations
- M31-XAXA0404G-L9: 4AI + 4AO analog control module
- M31-AXAX8080G-L9: 8DI + 8DO digital control module
- M31-AAAX4440G-L9: 4DI + 4AI + 4DO LoRa wireless module.
- M31-AXXX8000G-L: 8-channel digital input module
- M31-XXAX0080G-L: 8-channel relay output module


System-Wide Capabilities
- LoRa Mesh Networking - Star/mesh topologies with 83 channels
- Modbus Address Flexibility - 1-255 addresses via DIP switches
- Hot-Swap Expansion - Add modules without power cycling
- Transparent Mode - Forward non-local Modbus commands
- Industrial Mounting - DIN-rail and panel mounting options
Shared Technical Parameters
- Operating Temp: -40°C to +85°C
- Ingress Protection: IP20 (control cabinet use)
- Wireless Security: AES-128 encryption
- Configuration: Windows-based utility software
- Compliance: EN 55032, EN 61000-6-2, EN 61000-6-4
Deployment Considerations
- Max 16 nodes per LoRa network segment
- E90-DTU gateway required for cloud connectivity
- 5dBi antenna recommended for 10km range




























4.We can accept the payment method such as Paypal/Credit card/ L/C and T/T.
Practical Application Scenarios
1. Smart Agriculture Irrigation Control
Large-scale farming operations often face challenges in laying cables across expansive fields. Using the M31-XAXA0404G-L9, agricultural engineers can remotely manage water valves and monitor soil moisture sensors. The LoRa transmission ensures that control signals penetrate through dense foliage and uneven terrain, eliminating the need for expensive trenching while automating water distribution based on real-time environmental data.
2. Distributed Power Distribution Monitoring
In power grid management, monitoring status indicators and controlling breakers in remote substations is a critical task. The M31-AXAX8080G-L9 allows for centralized monitoring of multiple digital inputs (e.g., fault alarms, switch positions) and remote triggering of digital outputs. This provides a cost-effective way to integrate legacy substation equipment into a modern, wireless IoT-based grid management system.
3. Industrial Warehouse HVAC Management
Warehouse climate control often requires managing multiple decentralized ventilation or heating units. By deploying the M31-AAAX4440G-L9, maintenance teams can collect temperature and humidity readings from various zones and automatically trigger cooling or heating systems. The distributed nature of the I/O modules allows for flexible node placement, ensuring optimal environment maintenance across complex warehouse layouts.
Products FAQ Section
1. How does the LoRa protocol enhance the reliability of the M31 series in high-interference environments?
LoRa technology provides excellent noise immunity and high link budgets, allowing the M31 system to maintain stable communication in industrial zones plagued by heavy electromagnetic interference. Its spread-spectrum modulation ensures that data packets are successfully received even in challenging, non-line-of-sight environments where traditional RF protocols might fail.
2. Can I expand the I/O capacity after the initial network installation?
Yes, the M31 series is designed as an expandable, distributed system. Because the modules operate on a flexible LoRa wireless network topology, you can add additional modules to existing clusters whenever your operational needs scale, provided they fall within the coverage range and network capacity limits of your master gateway.
3. What protocols do the M31 modules support for integration with existing PLCs?
The M31 series is compatible with standard Modbus RTU protocols, making it easy to integrate with a wide array of industrial PLCs, SCADA systems, and HMI panels. This ensures that engineers can treat the wireless distributed I/O nodes as standard serial devices within their existing control automation frameworks without complex custom coding.
Company FAQ
Q1: Are you a manufacturer or a trading company?
A1: We are a manufacturer. Ebyte OEM/ODM M31-XAXA0404G4 way Analog input Modbus gateway support network module ethernet io moduleEbyte E72-2G4M20S1E CC2652P 2.4G Zigbee Low Energy BLE 5.0 Multi-protocol Wireless Communication Module with PCB AntennQ2: Can you do ODM or OEM for us?
A2: We are glad to offer custom service for you, we have an experienced engineers team who will provide you with a complete solution according to your requirements.
Q3.Whether the product can be customized logo?
A3.For bulk orders, we support custom logo.
Q4: What about the delivery time?
A4: For regular order it takes about 3-6 days for production, for mass order or customized order it may need 15-30 days.
Q5: What is your delivery terms and payment terms?
A5: We accept EXW, FOB, CFR, CIF, etc. You can choose the one which is the most convenient or cost effective for you. 100% in advance for sample order, 50% deposit and 50% balance for mass order.
Q6: After service and warranty?
A6: We provide 1 year warranty, if you have any problems in the use of products, please contact to your sales person.
Q7. How can we know the product quality?
A7: We suggest you to order a sample. Also, you can send us email for detail photos for checking if you cannot get enough
information in the product page.
Q8. How can we get samples from you ?
A8.Samples are available. Normally we take 2 days to arrange samples. If we have no business record with you before, we need to charge boot samples cost and post courier freight.
Q9.Can your module be connected with Arduino board? Can you provide Sample code?
A9: We don’t know the model of your Arduino, so we don’t sure if our module can be connected with it. Please be sure of the power supply when you connect your Arduino board with our module, 3.3V is ok. But for 5V, you need to add 4-10k pull-up resistor for the TXD&AUX pin. Sorry we don’t have the sample code to offer.
Q10.Can your module be connected with Raspberry Pi?
A10: Yes, our module can be connected with Raspberry Pi.Ebyte OEM/ODM ME31-XAAX0440 4 way Analog input Modbus gateway support network module ethernet io moduleEbyte E72-2G4M20S1E CC2652P 2.4G Zigbee Low Energy BLE 5.0 Multi-protocol Wireless Communication Module with PCB Antenna
