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TotalSense air quality sensor (BACnet MS/TP)

Indoor air quality multi-sensor (CO2 / PM / TVOC / CO / ozone) · BACnet points list

Senva TotalSense air quality sensor (BACnet MS/TP) BACnet points list

Updated 6 November 2026

Short answer

TotalSense is a Senva indoor air quality monitor with BACnet MS/TP. Analog Inputs give temperature, RH, dew point, CO2, TVOC, PM mass and counts, CO, ozone, light, occupancy, pressure, an air quality index and per-sensor status flags. Analog Values hold offsets, CO2 auto-calibration, relay and analog output setup, a built-in PID loop, air quality thresholds and display options.

This page lists 113 BACnet objects for the Senva TotalSense air quality sensor (BACnet MS/TP) — 69 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Senva’s own free documentation, linked below.

Manufacturer: Senva
Model: TotalSense air quality sensor (BACnet MS/TP)
Equipment: Indoor air quality multi-sensor (CO2 / PM / TVOC / CO / ozone)
Equipment type: Thermostats, sensors & meters
BACnet objects: 113 (69 writable)
Transport: BACnet MS/TP
Firmware: VSBHP 14.10, application 1.2.x (PICS 5/13/2021)
Also known as: TotalSense, AQ2W, AQ2W-XXXXXX, Senva TotalSense IAQ, Senva TotalSense CO2 PM TVOC
Source document: BACnet Protocol Guide TotalSense Series · 154-0043-0G · rev. 2025-12-09

Download CSV 113 rows Download EDE B.I.G.-EU JSON Manufacturer PDF ↗ Compare with your scan Download Easy BACnet Mobile App Google Play

Reference only, provided as-is: verify against Senva’s current documentation and the live device before use. Not official Senva information. Terms of use.

BMS integration notes: Senva TotalSense air quality sensor (BACnet MS/TP)

Integration in brief

Set protocol, MAC and baud on the DIP switches, then read temperature, RH, CO2, PM2.5, TVOC and the air quality index. Check the per-sensor status AIs for faults.

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 1	Temperature	Space temperature (units per AV 2)	Read
AI 2	Relative humidity	Space RH	Read
AI 3	CO2	Space CO2, ppm	Read
AI 7	PM 2.5 ug/m3	PM2.5, µg/m3	Read
AI 4	TVOC ug/m3	TVOC, µg/m3	Read
AI 10	Air quality	0 Good, 1 Fair, 2 Poor	Read
AI 12	Occupancy	PIR occupancy (PIR models)	Read
AI 17	System status	System fault bit flags	Read

Network setup

Protocol, MAC address (0-127), baud (9600-115200) and data/parity/stop come from DIP switches.
Device instance ships as 655xxx (last 3 digits of the serial number) and is writable; Max_Master is writable.

Watch out for

AV 31 = 1234 restores factory settings.
TVOC ppb assumes ethanol's molecular weight; use AV 8 to rescale for another compound.

Senva TotalSense air quality sensor (BACnet MS/TP) 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.

113 of 113 shown

Type

Access

Units

Show

Senva TotalSense air quality sensor (BACnet MS/TP) BACnet Points List
			Description			States
AImin	1	Temperature	Space temperature (units per AV 2)	°F / °C	Read
AImin	2	Relative humidity	Relative humidity	%RH	Read
AImin	3	CO2	CO2 concentration	ppm	Read
AImin	4	TVOC ug/m3	TVOC, compensated for temperature and pressure	µg/m3	Read
AI	5	TVOC PPB	TVOC as ppb (ethanol-based conversion, scale with AV 8)	ppb	Read
AI	6	PM 1.0 ug/m3	Concentration of particles sized 0.3-1.0 µg/m3	µg/m3	Read
AImin	7	PM 2.5 ug/m3	Concentration of particles sized 0.3-2.5 µg/m3	µg/m3	Read
AI	8	PM 4.0 ug/m3	Concentration of particles sized 0.3-4.0 µg/m3	µg/m3	Read
AI	9	PM 10.0 ug/m3	Concentration of particles sized 0.3-10.0 µg/m3	µg/m3	Read
AImin	10	Air quality	Air quality status		Read	0=Good, 1=Fair, 2=Poor
AI	11	Slider display	Setpoint slider position	°F / °C	Read
AImin	12	Occupancy	Status of PIR occupancy sensor		Read	0=Unoccupied, 1=Occupied
AI	13	Ambient light	Ambient light level	fc	Read
AI	14	Relay contacts state	State of setpoint relay		Read	0=OPEN, 1=CLOSED
AI	15	Dewpoint	Dew point temperature	°F / °C	Read
AI	16	Pressure	Barometric pressure (pressure models)	inHg	Read
AImin	17	System status	System status bit flags		Read	0x01=EEPROM hardware fault (Consult factory); 0x02=EEPROM data corruption (Consult factory); 0x04=EEPROM write error (Consult factory); 0x08=Device is currently using factory defaults (Consult factory); 0x10=Sensor error (see individual sensor status to more info). Bolded statuses will trigger this error.
AI	18	Temp sensor status	Temp sensor status bit flags		Read	0x01=Sensor hardware fault (Consult factory); 0x02=Sensor Data error (Consult factory)
AI	19	RH sensor status	RH sensor status bit flags		Read	0x01=Sensor hardware fault (Consult factory); 0x02=Sensor Data error (Consult factory)
AI	20	CO2 sensor status	CO2 sensor status bit flags		Read	0x01=Sensor hardware fault (Consult factory); 0x02=Sensor Data error (Consult factory); 0x04=Sensor not ready (Consult factory); 0x40=Temperature compensation not applied (No action necessary. Default value 25oC is used for temp compensation).; 0x80=Pressure compensation not applied (No action necessary. Default value 25oC is used for pressure compensation.
AI	21	TVOC sensor status	TVOC sensor status bit flags		Read	0x01=Sensor hardware (I2C) fault (Consult factory); 0x02=Sensor data error; 0x04=Sensor other hardware error; 0x08=Sensor not ready (training); 0x10=Temperature compensation not applied; 0x20=Humidity compensation not applied
AI	22	PM sensor status	PM sensor status bit flags		Read	0x01=Sensor communication error (Consult factory); 0x02=Sensor Data Error (Consult factory); 0x04=Sensor not ready (Consult factory); 0x08=Sensor fan speed warning (Consult factory); 0x10=Sensor fan failure (Consult factory); 0x20=Sensor laser failure (Consult factory)
AI	23	Pressure sensor status	Pressure sensor status bit flags		Read	0x01=Sensor hardware fault (Consult factory); 0x02=Sensor Data error (Consult factory); 0x04=Sensor not ready (Consult factory)
AI	24	PID Output Power	PID analog output level		Read
AI	25	PM0.5 Particle Count	Counts for particles size 0.3 to 0.5	#/cm3	Read
AI	26	PM1.0 Particle Count	Counts for particles size 0.3 to 1.0	#/cm3	Read
AI	27	PM2.5 Particle Count	Counts for particles size 0.3 to 2.5	#/cm3	Read
AI	28	PM4.0 Particle Count	Counts for particles size 0.3 to 4.0	#/cm3	Read
AI	29	PM10.0 Particle Count	Counts for particles size 0.3 to 10.0	#/cm3	Read
AI	30	PM Avg Particle Size	Average measured particle size	µm	Read
AI	31	CO Reading	CO reading	ppm	Read
AI	32	CO Status	CO Status bit flags		Read	0x01=Sensor communication error (Consult factory); 0x02=Sensor Data Error (Consult factory); 0x04=Sensor Error; 0x08=Sensor not ready (Consult factory); 0x10=Sensor End of Life; 0x20=Calibration Expired; 0x40=Temperature compensation not applied
AI	33	O3 Reading	Ozone reading	ppb	Read
AI	34	O3 Status	O3 Status bit flags		Read	0x01=Sensor communication error (Consult factory); 0x02=Sensor Data Error (Consult factory); 0x04=Sensor Error; 0x08=Sensor not ready (Consult factory); 0x10=Temperature compensation not applied; 0x02=Humidity compensation not applied
AI	35	User BTN Active State	User button activity		Read	0=No button press in timeout, 1=Pressed within timeout
AV	1	Temp Offset	Temperature offset, ±9 °F (±5 °C)	°F	Write
AV	2	Temp Unit	Temperature units for display and BACnet values		Write	0=°F, 1=°C
AV	3	RH Offset	RH offset, ±5 %RH	%RH	Write
AV	4	CO2 Offset	CO2 offset, ±250 ppm	ppm	Write
AV	5	CO2 autocal enable	CO2 automatic baseline calibration (ABC) enable		Write	0=disabled, 1=enabled
AV	6	CO2 Autocal Baseline	CO2 ABC baseline (default 400)	ppm	Write
AV	7	CO2 Autocal Period	CO2 ABC period (default 14)	days	Write
AV	8	TVOC scale	TVOC scaling factor (default 1.000 = ethanol)		Write
AV	9	Slider display min	Value shown at slider bottom (display only)	°F / °C	Write
AV	10	Slider display max	Value shown at slider top (display only)	°F / °C	Write
AV	11	PIR Motion event sensitivity	PIR motion sensitivity (default 80)		Write
AV	12	PIR Occupied delay	Occupied hold time after motion (default 10)	min	Write
AV	13	PM clean interval	PM sensor auto-clean interval, 0 = off (default 168)	h	Write
AV	14	PM command	PM sensor command		Write	1=Fan manual clean, 2=PM sensor reset
AV	15	Relay source	Which measurement will activate setpoint relay		Write	0=None, 1=CO2, 2=Humidity, 3=Temp, 4=TVOC µg/m3, 5=PM, 6=Occupancy, 7=Air Quality, 8=CO, 9=Ozone, 10=Ambient Light
AV	16	Relay polarity	Relay contact type		Write	0=N.O., 1=N.C.
AV	17	Relay on threshold	Relay on point, % of sensor full scale	%	Write
AV	18	Relay off threshold	Relay off point, % of sensor full scale	%	Write
AV	19	Relay min on time	Relay minimum on time (default 60)	s	Write
AV	20	Relay min off time	Relay minimum off time (default 60)	s	Write
AV	21	Display PM size	PM size shown on display	µm	Write	0=0.3-1.0, 1=0.3-2.5, 2=0.3-4.0, 3=0.3-10.0
AV	22	Display center	Value shown in display center		Write	0=None, 1=Temperature, 2=Humidity, 3=CO2, 4=Air Quality, 5=TVOC µg/m3, 6=TVOC ppb, 7=PM, 8=Temp Setpoint, 9=CO, 10=O3
AV	23	Display upper left	Relay icon on display		Write	0=None, 1=Relay Icon
AV	24	Display upper right	Value shown upper right		Write	0=None, 1=Temperature, 2=Humidity, 3=CO2, 5=TVOC µg/m3, 6=TVOC ppb, 7=PM, 8=Temp Setpoint, 9=CO, 10=O3
AV	25	Display lower left	Value shown lower left		Write	0=None, 1=Temperature, 2=Humidity, 3=CO2, 5=TVOC µg/m3, 6=TVOC ppb, 7=PM, 8=Temp Setpoint, 9=CO, 10=O3
AV	26	Display lower right	Value shown lower right		Write	0=None, 1=Temperature, 2=Humidity, 3=CO2, 5=TVOC µg/m3, 6=TVOC ppb, 7=PM, 8=Temp Setpoint, 9=CO, 10=O3
AV	27	AQ Ring brightness	AQ ring brightness (default 100)		Write
AV	28	Good-Fair	Good/Fair air quality boundary (default 70)		Write
AV	29	Fair-Poor	Fair/Poor air quality boundary (default 40)		Write
AV	30	VOC Mode	VOC sensor mode		Write	0=Normal operation, 1=Training mode (48 hours)
AV	31	Factory reset	Write 1234 to restore factory settings		Write
AV	32	Protocol	Read from the DIP switches		Read	0=Modbus, 1=BACnet
AV	33	MAC address	Read from the DIP switches		Read
AV	34	Baud rate	Read from the DIP switches		Read	0=9600, 1=19200, 2=38400, 3=57600, 4=76800, 5=115200
AV	35	Data/Parity/Stop	Read from the DIP switches		Read	0=8N1, 1=8N2, 2=8O1, 3=8E1
AV	36	Analog Source	Analog output source		Write	0=None, 1=CO2, 2=Humidity, 3=Temperature, 4=VOC, 5=PM, 6=Slider Temp, 7=PID-Temp, 8=PID-CO2, 9=PID-Slider Temp, 10=CO, 11=Ozone, 12=PID-AirQuality, 13=Ambient Light
AV	37	Analog V min	Analog output low end, volts	V	Write
AV	38	Analog V max	Analog output high end, volts	V	Write
AV	39	Analog mA min	Analog output low end, mA	mA	Write
AV	40	Analog mA max	Analog output high end, mA	mA	Write
AV	41	PID CO2 setpoint	CO2 setpoint for the PID controlled analog output	ppm	Write
AV	42	PID Temp Setpoint	Temperature set point for the PID controlled analog output	°F / °C	Write
AV	43	PID Kp	Proportional gain PID coefficient		Write
AV	44	PID Ki	Integral gain PID coefficient		Write
AV	45	PID Kd	Derivative gain PID coefficient		Write
AV	46	PID Invert	Reverses the PID error sign		Write	0=Not Inverted, 1=Inverted
AV	50	AQ Enable Temp	Use temperature in the air quality index		Write	0=Disabled, 1=Enabled
AV	51	AQ Enable Humidity	Use humidity in the air quality index		Write	0=Disabled, 1=Enabled
AV	52	AQ Enable CO2	Use CO2 in the air quality index		Write	0=Disabled, 1=Enabled
AV	53	AQ Enable PM	Use PM in the air quality index		Write	0=Disabled, 1=Enabled
AV	54	AQ Enable VOC	Use VOC in the air quality index		Write	0=Disabled, 1=Enabled
AV	55	Display Lock	Locks the settings menu		Write	0=Disabled, 1=Enabled
AV	56	PIR Display Wake-Up	Wake display on motion		Write	0=Disabled, 1=Enabled
AV	57	Screensaver Timeout	Screensaver delay (default 1)	min	Write
AV	58	AQ Enable CO	Use CO in the air quality index		Write	0=Disabled, 1=Enabled
AV	59	AQ Enable Ozone	Use ozone in the air quality index		Write	0=Disabled, 1=Enabled
AV	60	CO Calibration Expiration	Days until CO calibration due	days	Read
AV	61	CO Sensor End of Life	Days of CO sensor life left	days	Read
AV	62	Ozone Calibration expiration	Days left on ozone calibration	days	Read
AV	63	BTN State Hold Time	How long the button state stays active (default 10)	s	Write
AV	64	Ozone Sensor end of life	Days of ozone sensor life left	days	Read
AV	65	Temp Setpoint	Setpoint used without a slider (default 72)	°F / °C	Read
AV	66	AQI PID Setpoint	Air quality index PID setpoint	%	Write
AV	67	AQI CO2 Poor quality	Threshold where CO2 quality becomes Poor	ppm	Write
AV	68	AQI CO2 Good quality	Threshold where CO2 quality becomes Good	ppm	Write
AV	69	AQI VOC Poor quality	Threshold where VOC quality becomes Poor	µg/m3	Write
AV	70	AQI VOC Good quality	Threshold where VOC quality becomes Good	µg/m3	Write
AV	71	AQI PM Poor quality	Threshold where PM quality becomes Poor	µg/m3	Write
AV	72	AQI PM Good quality	Threshold where PM quality becomes Good	µg/m3	Write
AV	73	AQI CO Poor quality	Threshold where CO quality becomes Poor	ppm	Write
AV	74	AQI CO Good quality	Threshold where CO quality becomes Good	ppm	Write
AV	75	AQI O3 Poor quality	Threshold where Ozone quality becomes Poor	ppb	Write
AV	76	AQI O3 Good quality	Threshold where Ozone quality becomes Good	ppb	Write
AV	77	AQI Temp Range Low	Low window threshold for good temperature quality	°F / °C	Write
AV	78	AQI CO Good quality	High window threshold for good temperature quality	°F / °C	Write
AV	79	AQI Temp Range Low	Low window threshold for good humidity quality	%RH	Write
AV	80	AQI CO Good quality	High window threshold for good humidity quality	%RH	Write
AV	81	Ambient Range	Sets max range for Ambient Light Sensor	fc	Write	0=300, 1=1000

Object ID lookup: Senva TotalSense air quality sensor point IDs by name

AI1Temperature
AI2Relative humidity
AI3CO2
AI4TVOC ug/m3
AI5TVOC PPB
AI6PM 1.0 ug/m3
AI7PM 2.5 ug/m3
AI8PM 4.0 ug/m3
AI9PM 10.0 ug/m3
AI10Air quality
AI11Slider display
AI12Occupancy
AI13Ambient light
AI14Relay contacts state
AI15Dewpoint
AI16Pressure
AI17System status
AI18Temp sensor status
AI19RH sensor status
AI20CO2 sensor status
AI21TVOC sensor status
AI22PM sensor status
AI23Pressure sensor status
AI24PID Output Power
AI25PM0.5 Particle Count
AI26PM1.0 Particle Count
AI27PM2.5 Particle Count
AI28PM4.0 Particle Count
AI29PM10.0 Particle Count
AI30PM Avg Particle Size
AI31CO Reading
AI32CO Status
AI33O3 Reading
AI34O3 Status
AI35User BTN Active State
AV1Temp Offset
AV2Temp Unit
AV3RH Offset
AV4CO2 Offset
AV5CO2 autocal enable
AV6CO2 Autocal Baseline
AV7CO2 Autocal Period
AV8TVOC scale
AV9Slider display min
AV10Slider display max
AV11PIR Motion event sensitivity
AV12PIR Occupied delay
AV13PM clean interval
AV14PM command
AV15Relay source
AV16Relay polarity
AV17Relay on threshold
AV18Relay off threshold
AV19Relay min on time
AV20Relay min off time
AV21Display PM size
AV22Display center
AV23Display upper left
AV24Display upper right
AV25Display lower left
AV26Display lower right
AV27AQ Ring brightness
AV28Good-Fair
AV29Fair-Poor
AV30VOC Mode
AV31Factory reset
AV32Protocol
AV33MAC address
AV34Baud rate
AV35Data/Parity/Stop
AV36Analog Source
AV37Analog V min
AV38Analog V max
AV39Analog mA min
AV40Analog mA max
AV41PID CO2 setpoint
AV42PID Temp Setpoint
AV43PID Kp
AV44PID Ki
AV45PID Kd
AV46PID Invert
AV50AQ Enable Temp
AV51AQ Enable Humidity
AV52AQ Enable CO2
AV53AQ Enable PM
AV54AQ Enable VOC
AV55Display Lock
AV56PIR Display Wake-Up
AV57Screensaver Timeout
AV58AQ Enable CO
AV59AQ Enable Ozone
AV60CO Calibration Expiration
AV61CO Sensor End of Life
AV62Ozone Calibration expiration
AV63BTN State Hold Time
AV64Ozone Sensor end of life
AV65Temp Setpoint
AV66AQI PID Setpoint
AV67AQI CO2 Poor quality
AV68AQI CO2 Good quality
AV69AQI VOC Poor quality
AV70AQI VOC Good quality
AV71AQI PM Poor quality
AV72AQI PM Good quality
AV73AQI CO Poor quality
AV74AQI CO Good quality
AV75AQI O3 Poor quality
AV76AQI O3 Good quality
AV77AQI Temp Range Low
AV78AQI CO Good quality
AV79AQI Temp Range Low
AV80AQI CO Good quality
AV81Ambient Range

Integration notes

Points from the Readings, Diagnostics and Settings tables of guide 154-0043-0G.
Objects for sensors a model does not have (CO, ozone, pressure, PIR, light, relay, analog output) are not active on that model.
The guide reuses names for AV 77-80 ("AQI Temp Range Low", "AQI CO Good quality"); their descriptions say they are the temperature and humidity good-quality window limits. Kept as printed.
Relay on/off thresholds AV 17/18 are percent of the selected sensor's full scale.
Protocol, MAC address, baud and parity (AV 32-35) are read from DIP switches and are read-only.

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 TotalSense air quality sensor (BACnet MS/TP) 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 Senva TotalSense air quality sensor (BACnet MS/TP)

How many BACnet points does the Senva TotalSense air quality sensor (BACnet MS/TP) have?

This list has 113 BACnet objects: 35 analog inputs, 78 analog values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Senva TotalSense air quality sensor (BACnet MS/TP) BACnet points are writable?

69 of the 113 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 Senva TotalSense air quality sensor (BACnet MS/TP) BACnet documentation?

The source is BACnet Protocol Guide TotalSense Series (154-0043-0G), revision 2025-12-09, published free by Senva at https://www.senvainc.com/catalog/documents/downloadcenter/154-0043-0G%20TotalSense%20BACnet%20Guide.pdf.

What are the minimum BACnet points to integrate the Senva TotalSense air quality sensor (BACnet MS/TP)?

Start with AI 1 Temperature (Space temperature (units per AV 2)); AI 2 Relative humidity (Space RH); AI 3 CO2 (Space CO2, ppm); AI 7 PM 2.5 ug/m3 (PM2.5, µg/m3); AI 4 TVOC ug/m3 (TVOC, µg/m3); AI 10 Air quality (0 Good, 1 Fair, 2 Poor); AI 12 Occupancy (PIR occupancy (PIR models)); AI 17 System status (System fault bit flags).

How do I check these points on the real TotalSense air quality sensor (BACnet MS/TP)?

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 Senva BACnet points lists

Source: BACnet Protocol Guide TotalSense Series · 154-0043-0G · rev. 2025-12-09. Object names, instances and units are reproduced as published; descriptions are our own.