E+E Elektronik EE671 - HVAC Miniature Air Flow Probe
Measures air velocity and temperature for HVAC applications.
The E+E Elektronik EE671 is a compact air velocity probe for HVAC applications. This Modbus RTU template reads airflow speed (m/s) and temperature (°C) from the device using float32 registers. No writable controls are included.
- Protocol
- Modbus RTU
- Connection
- RS485, 9600 baud
- Registers
- 2, read only
- Brand
- E+E Elektronik
- Key readings
- Airflow (m/s) · Temperature (°C)
- Compatible models
- EE671
- Last updated
Registers (2)
2 read, 0 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| Airflow | m/s | Read | |||
| Temperature T | °C | Read |
Loading registers…
Send your device list
If a device is not in the library yet, we build the template for free as soon as we have the register data.
Use cases
- Monitor real-time air velocity in HVAC ducts from a centralized cloud dashboard.
- Log duct temperature trends over time to verify air handling unit performance.
- Create an alert when airflow drops below a minimum threshold, indicating a blocked filter or damper fault.
- Compare supply and return air velocities across multiple zones in a commercial building.
- Generate periodic airflow reports for facility managers or building compliance documentation.
Installation
Wire the EE671 probe to the ModbusCloud Gateway using a shielded RS-485 cable, connecting A, B, and GND terminals.
Set the EE671 Modbus slave address using the configuration method described in the device manual, and note the address for gateway setup.
Configure the ModbusCloud gateway serial port to 9600 baud, odd parity, and 1 stop bit to match the EE671 default communication settings.
Import the E+E Elektronik EE671 template from the ModbusCloud template library and assign it to the correct gateway port and slave address.
Verify that airflow (m/s) and temperature (°C) values appear on the ModbusCloud dashboard, and confirm readings match expected conditions in the duct.
Things to watch for
I see zero or null values for airflow and temperature. What should I check?
Confirm the RS-485 wiring polarity (A and B) is correct and that the slave address configured on the gateway matches the address set on the EE671. Also verify baud rate is 9600 and parity is set to odd.
The readings look incorrect or extremely large. Why?
The EE671 uses float32 (IEEE 754) encoding across two consecutive registers. Check that the byte order and word order settings on the gateway match the device. Swapping the register order typically resolves this.
Can I connect multiple EE671 probes on one RS-485 bus?
Yes. Each probe must have a unique Modbus slave address. Assign different addresses via the EE671 configuration interface and add a separate template instance per device in ModbusCloud.
Does the EE671 require a specific firmware version for Modbus communication?
All EE671 variants with the Modbus RTU output option support the registers used in this template. Consult the E+E Elektronik datasheet to confirm your model includes the Modbus interface.
More E+E Elektronik templates
E+E Elektronik EE310 - High-end humidity and temperature sensor up to 180 °C
E+E Elektronik EE680 - Air Velocity Sensor for Laminar Flow Monitoring
E+E Elektronik EE872 - Modular 4 in 1 probe for CO2, humidity, temperature and pressure
E+E Elektronik EE072 - Humidity and Temperature Probe with Digital Interface
E+E Elektronik EE260 - Heated Humidity and Temperature Probe for Meteorology
E+E Elektronik EE210 - Humidity and Temperature Sensor for Demanding Climate Control
Want to see how it works?
