IP Remote IO Controller | 8-Channel Dry Contact Over IP Ethernet Converter
Short Description:
Baudcom BD-8SER-IP is a professional 8-channel Remote IO Controller that integrates digital input (DI), relay output (DO), and analog input (AI) over Ethernet or RS485. Designed for industrial automation, building management, security systems, and IoT applications. It supports Modbus TCP, Modbus RTU, MQTT, JSON, and HTTP protocols. Featuring 12-bit ADC preci…Description
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Description
Baudcom BD-8SER-IP is a professional 8-channel Remote IO Controller that integrates digital input (DI), relay output (DO), and analog input (AI) over Ethernet or RS485. Designed for industrial automation, building management, security systems, and IoT applications. It supports Modbus TCP, Modbus RTU, MQTT, JSON, and HTTP protocols. Featuring 12-bit ADC precision, optical isolation for DI, and robust relay output (5A 250V AC / 5A 30V DC), this controller ensures reliable real-time monitoring and remote device control. With support for RS485 serial port server function, it seamlessly connects to third-party collectors and controllers. Dry contact over ethernet converter engineered for harsh environments, it operates from -40℃ to +85℃, making it ideal for remote monitoring, access control, and energy management solutions.
Remote IO Controller Functional characteristics
- Supports eight DI/DO/AI channels and can be controlled remotely or locally.
- AI supports 12-bit accuracy, and the data is adjusted to ensure accuracy.
- It also supports the serial port server function to control external third-party RS485 devices over the network.
- Support DI control DO function, using a pair of the converter through RS485 and Ethernet, can control each other, easy to use.
- Support Modbus TCP, Modbus RTU, MQTT, JSON, HTTP and other communication modes.
- Connect to various public clouds, send data in JSON format, and control delivery in JSON format.
- Rich indicators: display DI, DO status, network status, data flow status, etc.
- It can provide complete RS485 control instructions and Modbus RTU instructions, which is convenient for engineers to integrate development.
- You can restore factory Settings with one click, including baud rate, station address, network configuration of communication module, etc.
Dry contact over ethernet Controller Hardware description

Specification
The controller communication mode supports RS485, Ethernet.
| Supported model | Communication medium | Network interface | Support protocol | Instructions |
| BD-8SER-IP | Ethernet TCP UDP/RS485 | Ethernet | Modbus TCP/ Modbus RTU/ JSON/ MQTT |
| appearance | |
| dimension: | L x W x H =9.2cm×19.7cm×2.5cm |
| Serial port parameter | |
| 485-IO Baud rate: The default baud rate is 115200bps, which can be changed by using the RemoteIO software or commands.
Data bit: 8 bits. Check bit: No check, odd check, even check. Stop bit: 1 bit |
|
| software | |
| Network protocol: | MODBUS TCP/MQTT/JSON/HTTP |
| RS485 protocol: | MODBUS RTU |
| AI input form | |
| Current input: 4~20mA
Voltage input: 0~5V, 0~10V (need to customize) Resistance input: 0~10K, resistance type temperature and humidity sensor, etc. (need to be customized) |
|
| Power consumption (relay non-draw state) | |
| Running stable state: 30mA@12V
4G dial status: 60mA@12V DO relay closed, DI input closed (maximum power consumption) : 300mA@12V |
|
| Ethernet parameters | |
| Ethernet | 10/100M adaptive Ethernet can be connected |
| Environmental requirement | |
| Operating temperature: | -40~85℃ |
| Storage temperature: | -45~165℃ |
| Humidity range: | 5~95%Relative humidity |
Application
- Building/access control/security control system;
- Industrial automation System;
Internet of Things, remote meter reading, information collection, etc.
The dry contact IP converter (Ethernet interface) is used as an example. Figure shows the typical application connection. Connect the field input and output devices to the controller, and then connect the controller to the network via a network cable. Then the upper computer can send data to converter through Modbus TCP protocol to realize the query input device and control output device.


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| Product Model | Descriptions | Inquiry |
|---|---|---|
| BD-8SER-IP | 8-channel Remote IO Controller that integrates digital input (DI), relay output (DO), and analog input (AI) over Ethernet or RS485. | Request Price |
| Request Price |