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Thermal dispersion airflow measuring station · BACnet points list
EBTRON Silver Series STN104 Airflow / Temperature Transmitter (RS-485 network version) BACnet points list
Updated 7 November 2026
The STN104 is the RS-485 network version of the EBTRON Silver Series STx104 transmitter. On BACnet MS/TP it reports airflow, differential pressure and temperature as analog inputs, with writable analog values for the duct free area and the baud rate.
This page lists 5 BACnet objects for the EBTRON Silver Series STN104 Airflow / Temperature Transmitter (RS-485 network version) — 2 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from EBTRON’s own free documentation, linked below.
- Manufacturer
- EBTRON
- Model
- Silver Series STN104 Airflow / Temperature Transmitter (RS-485 network version)
- Equipment
- Thermal dispersion airflow measuring station
- Equipment type
- Thermostats, sensors & meters
- BACnet objects
- 5 (2 writable)
- Transport
- BACnet MS/TP
- Firmware
- Not stated
- Also known as
- STN104, STx104, Silver Series STx104, TM_STx104
Reference only, provided as-is: verify against EBTRON’s current documentation and the live device before use. Not official EBTRON information. Terms of use.
BMS integration notes: EBTRON Silver Series STN104 Airflow / Temperature Transmitter (RS-485 network version)
Read airflow (AI 0), temperature (AI 2) and differential pressure (AI 1). Write the duct free area to AV 0 so airflow in CFM or LPS is right.
Minimum points to map
The short list most integrators start with — enough to run the unit from a BMS. Map more as the job needs.
| Object | Name | Why | Access |
|---|---|---|---|
| AI 0 | Airflow | Airflow (FPM, CFM, MPS or LPS) | Read |
| AI 2 | Temperature | Air temperature | Read |
| AI 1 | Pressure | Differential pressure (in. H2O or Pa) | Read |
Network setup
- Ships with network address 1. For BACnet MS/TP the ADDRESS DIP switches set the MAC (1-127); switch 1 at power-up controls whether the device instance is set to the same value and the BACnet objects reset to defaults.
- MS/TP ships at 76,800 baud; write the Baud Rate object (AV 1) for 9600, 19,200 or 38,400.
EBTRON Silver Series STN104 Airflow / Temperature Transmitter (RS-485 network version) BACnet objects
Type: AI, AO, AV, BI, BO, BV, MI/MO/MV (multi-state) · Access: Read read-only, Write writable, Command writable with a priority array.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AImin | 0 | Airflow | Units FPM, CFM, MPS or LPS | fpm | Read | |
| AImin | 1 | Pressure | Differential pressure; units in. H2O or Pa | inH2O | Read | |
| AImin | 2 | Temperature | °C or °F | °F | Read | |
| AV | 0 | Free Area | Duct free area, sq.ft. | ft² | Write | |
| AV | 1 | Baud Rate | MS/TP baud: 9.6, 19.2, 38.4 or 76.8 kbps | Write |
No points match these filters.
Object ID lookup: EBTRON Silver Series STN104 Airflow / Temperature Transmitter point IDs by name
Integration notes
- Objects and writable properties come from Tables 5 and 6 of the manual. Units of the analog inputs are writable (Units property).
- Table 5 also lists a binary value "Auto Baud Rate Detection" but no instance is printed for it, so it is left out.
Check it against the live device. A points list tells you what the controller can expose; the unit in front of you may differ by firmware or installed options. This list is provided as-is for reference only and may contain mistakes — confirming it before you write, map or commission anything is up to you (terms). Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the Silver Series STN104 Airflow / Temperature Transmitter (RS-485 network version) and exports what it actually has to Excel — free. New to BACnet? Start with what a BACnet points list is and what the object types mean.
Questions about the EBTRON Silver Series STN104 Airflow / Temperature Transmitter (RS-485 network version)
How many BACnet points does the EBTRON Silver Series STN104 Airflow / Temperature Transmitter (RS-485 network version) have?
This list has 5 BACnet objects: 3 analog inputs, 2 analog values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which EBTRON Silver Series STN104 Airflow / Temperature Transmitter (RS-485 network version) BACnet points are writable?
2 of the 5 objects accept a write. Points marked Command have a priority array: a write holds until it is released, so release it back to automatic when you are done.
Where is the official EBTRON Silver Series STN104 Airflow / Temperature Transmitter (RS-485 network version) BACnet documentation?
The source is Silver Series STx104 Transmitter - Installation, Operation and Maintenance Technical Manual (TM_STx104_R3A), published free by EBTRON at https://ebtron.com/wp-content/uploads/TM_STx104.pdf.
What are the minimum BACnet points to integrate the EBTRON Silver Series STN104 Airflow / Temperature Transmitter (RS-485 network version)?
Start with AI 0 Airflow (Airflow (FPM, CFM, MPS or LPS)); AI 2 Temperature (Air temperature); AI 1 Pressure (Differential pressure (in. H2O or Pa)).
How do I check these points on the real Silver Series STN104 Airflow / Temperature Transmitter (RS-485 network version)?
Scan the network with a BACnet IP browser such as Easy BACnet, open the device and compare its object list with this table. Anything missing is usually an option that isn't installed or a point that is disabled in the controller's configuration.
More EBTRON BACnet points lists
- Thermal dispersion airflow measuring station
EBTRON Advantage IV Airflow Transmitter (GTx116e / GTx108e)
EBTRON Advantage IV airflow/temperature transmitters (GTx116e, GTx108e) and EB-Flow2 dual-location units.
Also known as: GTC116e, GTM116e, GTB116e, GTC108e, GTM108e, GTB108e, EB-Flow2, Advantage IV, Table F-2 - Thermal dispersion airflow measuring station
EBTRON Gold Series GTx116 Airflow Transmitter (GTC116 / GTM116)
EBTRON Gold Series GTx116 transmitters: GTC116 (RS-485) and GTM116 (Ethernet) network models.
Also known as: GTC116, GTM116, GTx116, Advantage III, Gold Series, TM_GTx116_R9A1 - Thermal dispersion airflow measuring station
EBTRON HTN104 Thermal Dispersion Airflow / Temperature Transmitter (firmware 1.x)
EBTRON HTN104 thermal dispersion airflow and temperature measurement transmitters with BACnet MS/TP (firmware 1.x).
Also known as: HTN104, HTN104-1.x, EBTRON HTN104 - Room air quality sensor
EBTRON IAQ-N100 wall-mount IAQ sensor
EBTRON IAQ-N100 wall-mount sensors measuring CO2.
Also known as: IAQ-N100, IAQN100, IAQ-N100-W, IAQ-Ny00-W - Room air quality sensor
EBTRON IAQ-N200 wall-mount IAQ sensor
EBTRON IAQ-N200 wall-mount sensors measuring relative humidity and temperature.
Also known as: IAQ-N200, IAQN200, IAQ-N200-W, IAQ-Ny00-W - Room air quality sensor
EBTRON IAQ-N300 wall-mount IAQ sensor
EBTRON IAQ-N300 wall-mount sensors measuring CO2, relative humidity and temperature.
Also known as: IAQ-N300, IAQN300, IAQ-N300-W, IAQ-Ny00-W
Source: Silver Series STx104 Transmitter - Installation, Operation and Maintenance Technical Manual · TM_STx104_R3A. Object names, instances and units are reproduced as published; descriptions are our own.