Product overview
Organizes field-device data into browser-based HMI screens for building or industrial monitoring and provides interfaces for other supervisory systems.
Selection and reading guide
- Acquisition covers more than 500 protocols; check the driver against each connected device.
- Choose the document matching the actual hardware before checking ports, power and forwarding functions; the editions are listed separately below.
Model document guide
- File unavailable in this language; purpose and functions: page 3; specification references: pages 2
- File unavailable in this language; purpose and functions: page 3; specification references: pages 2
- File unavailable in this language; purpose and functions: page 3; specification references: pages 2
- File unavailable in this language; purpose and functions: page 3; specification references: pages 2
Current product specifications
This model has multiple documented hardware versions. Choose the matching version below; a single specification set has not been assumed.
HMI2004-A9 — Web HMI gateway (standard edition) · Chinese PDF
Current product specifications
Specifications are sourced from the supplied 2026 product catalog. Unspecified values remain unconfirmed.
| Parameter | Specification |
|---|---|
| Total serial ports | 4 |
| RS485 ports | 4 |
| Ethernet ports | 2 |
| Point capacity | 2048 |
| Device capacity | 128 |
| Forwarding protocols | BACnet / Modbus / MQTT / OPC UA |
| Physical interfaces | RS485 / Ethernet |
| HMI visualization | Supported |
Model notes: More than 500 protocols.
Model datasheets
- File unavailable in this language
HMI2004-A9 — Web HMI gateway (RK edition; 2 GB RAM / 16 GB flash) · Chinese PDF
Current product specifications
Specifications are sourced from the supplied 2026 product catalog. Unspecified values remain unconfirmed.
| Parameter | Specification |
|---|---|
| Total serial ports | 4 |
| RS485 ports | 4 |
| Ethernet ports | 2 |
| Point capacity | 2048 |
| Device capacity | 128 |
| Physical interfaces | RS485 / Ethernet |
| HMI visualization | Supported |
Model notes: More than 500 protocols.
Model datasheets
- File unavailable in this language
HMI2004-A9 — Web HMI gateway (RK edition; 4 GB RAM / 32 GB flash) · Chinese PDF
Current product specifications
Specifications are sourced from the supplied 2026 product catalog. Unspecified values remain unconfirmed.
| Parameter | Specification |
|---|---|
| Total serial ports | 4 |
| RS485 ports | 4 |
| Ethernet ports | 2 |
| Point capacity | 2048 |
| Device capacity | 128 |
| Physical interfaces | RS485 / Ethernet |
| HMI visualization | Supported |
Model notes: More than 500 protocols.
Model datasheets
- File unavailable in this language
HMI2004-A9 — Web HMI gateway (RK3506; metal enclosure) · Chinese PDF
Current product specifications
Specifications are sourced from the supplied 2026 product catalog. Unspecified values remain unconfirmed.
| Parameter | Specification |
|---|---|
| Total serial ports | 4 |
| RS485 ports | 4 |
| Ethernet ports | 2 |
| Point capacity | 2048 |
| Device capacity | 128 |
| Forwarding protocols | BACnet / Modbus / MQTT / OPC UA |
| Physical interfaces | RS485 / Ethernet |
| HMI visualization | Supported |
Model notes: More than 500 protocols.
Model datasheets
- File unavailable in this language
