In the era of smart grids and IoT-enabled energy systems, remote control, reliability, and cloud connectivity are no longer optional — they are essential.
The BLIIOT BL192-Y24-Y24 MQTT Edge I/O Module offers a modern solution: combining 8-channel relay output, edge logic execution, and native MQTT protocol support for real-time, cloud-native control and monitoring in power infrastructure.
From the product specification:
BL192 is an industrial-grade programmable MQTT remote I/O module with electrical isolation, EMC/EMI certification, and extended temperature range (–45 to 80 °C).
It includes two 10/100M Ethernet ports, supporting MQTT, as well as compatibility with IoT cloud platforms like AWS IoT, ThingsBoard, Alibaba Cloud, Huawei Cloud.
It also supports one isolated RS485 port (Modbus RTU master mode) for legacy device integration.
The logic engine built into BL192 can run local decision-making (register operations, control logic) autonomously, reducing reliance on centralized control systems.
Modular expansion: BL192 supports 1 to 3 Y series I/O boards; with Y24 + Y24, it provides 8 relay outputs.
The relay outputs have specifications up to 250 VAC / 30 VDC / 2 A switching capacity.
Thus, BL192-Y24-Y24 becomes a powerful IoT-enabled remote control node capable of controlling multiple field circuits and reporting status to cloud or SCADA platforms via MQTT.
Modern energy systems — including substations, distributed energy resources (DERs), battery energy storage systems (BESS), microgrids, and renewables farms — demand distributed control, real-time monitoring, and cloud-based visibility.
Typical challenges include:
Legacy devices still using RS485 / Modbus protocols
Need for cloud / IoT integration for predictive analytics, remote operation
Demand for decentralized control logic to maintain system stability even when cloud or network connectivity is intermittent
Reducing wiring / installation complexity and bringing field devices into the cloud domain
BL192-Y24-Y24 addresses these by acting as a bridge + edge controller, giving relay control and logic at the edge, while communicating status / receiving commands via MQTT to cloud or edge IoT servers.
Here are some scenarios where BL192-Y24-Y24 can shine:
| Use Case | Purpose | Benefit |
|---|---|---|
| Substation Alarm & Relay Output Control | Trigger alarms, fans, status relays, fault indicators | Minimize wiring, integrate field relay signals into cloud SCADA systems |
| Battery Energy Storage Systems (BESS) | Control battery contactors, isolation relays, alarm relays | Seamless switching, cloud visibility, and local protection logic |
| Renewable Plant Compound Control | Switch inverters, protective relays, auxiliary loads | Distributed control, MQTT-based monitoring, reduced latency |
| Microgrid / Hybrid Energy Systems | Local load shedding, islanding switch control | Local logic maintains stability even if cloud link is lost |
| Power Distribution Cabinets / Feeder Control | Remote switching of breakers, fans, auxiliary systems | IoT-ready control, better fault diagnosis |
In a distributed renewable energy plant, each feeder cabinet is equipped with a BL192-Y24-Y24. The module controls:
Feeder contactor (relay) for switching
Auxiliary loads (pump, cooling fan)
Fault indication / alarm relays
It runs local logic to prioritize feeder switching under grid fluctuation, and publishes status and telemetry via MQTT to a cloud-based SCADA / monitoring platform. If connectivity is lost, its onboard logic ensures safe fallback behavior.
Operators saw a ~30% reduction in field wiring, real-time visibility of relay states in the cloud dashboard, and faster commissioning because configuration is via web UI & remote firmware upgrades.
Native MQTT Connectivity: Direct integration with cloud / IoT platforms without needing extra gateways.
Local Edge Logic: Maintains control even under network failures — enhances reliability.
Relay Outputs for Field Control: 8 channels allow controlling multiple field devices (contactors, alarms, circuits).
Legacy Device Integration: RS485 (Modbus) port enables bridging older meters or devices.
Modular & Scalable: Can mix relay boards with other I/O types (DI, AI, etc.), per deployment needs.
Industrial Robustness: Wide temp range, electrical isolation, EMC compliance ensure reliability in harsh environments.
The BL192-Y24-Y24 MQTT Edge I/O Module is an ideal fit for modern smart energy and power systems, where cloud connectivity, distributed control, and field-level actuation are critical.
By combining 8 relay outputs, local logic, and MQTT-native communications, it bridges field devices and cloud infrastructures — enabling smarter, scalable, and more resilient energy automation systems.
Learn more: https://bliiot.com/products/mqtt-edge-io-module-bl192
