Low power consumption is usually more important in energy management, environmental monitoring, agriculture or remote monitoring. For example, photovoltaic power stations, smart agriculture or smart city projects may pay more attention to low power consumption.

The following are recommendations for several low-power remote IO modules, combined with their technical features and application scenarios:

1. Advantech WISE-4000 series

Features:
Supports low-power wide area network (LPWAN) technologies such as LoRaWAN/NB-IoT, suitable for long-distance, low-power scenarios.
Suitable for scenarios such as energy management and environmental monitoring, and has been verified to achieve a 25% increase in energy utilization in photovoltaic power stations.
Built-in edge computing capabilities can reduce the frequency of cloud communication and further reduce power consumption.
Advantages:
Ultra-low power design, suitable for battery-powered or solar-powered scenarios.
Multi-protocol support (Modbus, MQTT, HTTP), strong compatibility.
Applicable scenarios:
Distributed energy management (such as photovoltaic, wind power).
Soil moisture and meteorological data collection in smart agriculture.

2. Ebyte MA01/ME31 Series

Features:
Supports LoRa/Zigbee communication technology, with long transmission distance and extremely low power consumption.
Modular design, supports multiple sensor interfaces (digital, analog, RS485).
Has achieved a 25% increase in equipment operating efficiency in smart energy and smart manufacturing.
Advantages:
Low power consumption design, suitable for unattended remote monitoring.
Adaptable to complex industrial environments (such as petrochemicals, hazardous areas).
Applicable scenarios:
Petrochemical pipeline pressure/temperature monitoring.
Predictive maintenance of industrial equipment (such as air compressors, motors).

3.MQTT remote IO module (supports Modbus+MQTT)

Features:
Supports MQTT protocol and transmits data via Ethernet or wireless network.
Can collect RS485/Modbus device data (such as temperature, humidity, liquid level), and control fans or air conditioners through DO.
It has been applied to air compressor room monitoring to achieve remote real-time status viewing and abnormal warning.
Advantages:
Low power consumption design, suitable for small and medium-sized remote sites.
Low development cost, compatible with mainstream host computer systems (such as SCADA, cloud platform).
Applicable scenarios:
Air compressor room, room environment monitoring.
Building intelligent lighting system (such as energy-saving solution of MR30 module).

Selection suggestions

1. Choose by communication technology:

LoRa/NB-IoT: Suitable for wide coverage, low power consumption scenarios (such as agriculture, energy).
Zigbee/WiFi: Suitable for short distance, high rate scenarios (such as workshop monitoring).
MQTT/Modbus: Suitable for industrial automation and cloud platform integration.

2. Choose by power consumption requirements:

Extreme low power consumption: Advantech WISE-4000, Ebyte MA01 series.
Balance performance and power consumption: Honeywell OneWireless, MQTT module.

3. Choose by environmental adaptability:

Harsh environment: Honeywell (IP67), Mosa ioLogik.
Outdoor deployment: Ebyte MA01 series (supports LoRa).

Future trend reference

Edge computing integration: Choose modules that support local data processing (such as Advantech WISE-4000) to reduce cloud communication energy consumption.
Multi-protocol compatibility: Prioritize support for multiple communication protocols (such as MQTT+Modbus+LoRa) to adapt to complex network requirements.
Sustainable design: Focus on the green certification of the module (such as RoHS, low standby power consumption).