PIR
PIR, RGB and embedded AI.
VS321 Milesight Wireless AI Occupancy Sensor
Wireless AI Occupancy Sensor
Order codeVS321 In stockOfficial distributor
The VS321 is a Wireless AI Occupancy Sensor. Built-in temperature, humidity, and light sensors add context for smarter automation. It has LoRaWAN LoRaWAN®, Milesight D2D and an IP30 housing.
- LoRaWANLoRaWAN®, Milesight D2D
- Power~11.3 years (SF7, EU868)
- ProtectionIP30
- Operating–40 … +125 °C
- In stockVilnius warehouse · EU
- In stockLondon warehouse · UK
Dispatch and lead time are confirmed in the quote.
- Official distributor
- 17+ years in IoT
- Installation support
Manufacturer warranty24 months
Overview
VS321 overview
Overview
The VS321 is a battery-powered wireless AI occupancy sensor for offices, meeting rooms, and campuses. It detects occupancy, senses ambient light, and monitors the environment to support smart automation.
AI Detection
The sensor combines PIR motion sensing with an RGB camera and embedded AI to reach up to 95% accuracy. Two modes cover both regional people counting and desk-level occupancy.
Modes
Reporting mode runs occupancy checks at set intervals for stable daily monitoring. Detection mode uses PIR to wake the camera only on motion, saving power while keeping accuracy.
Environment
Built-in temperature, humidity, and light sensors add context for smarter automation. The data supports comfort, energy efficiency, and ESG reporting in the workplace.
Power
Four ER14505 batteries give over 10 years of life, with three modes trading report rate for longevity. Wire-free install suits retrofits in older buildings and open offices.
Integration
As a Milesight D2D controller, the VS321 triggers other devices such as WS smart switches without a gateway. Bluetooth setup makes deployment and maintenance fast.
Key features
Up to 95% detection accuracy
Up to 95% detection accuracy.
People counting and desk modes
People counting and desk modes.
Temperature
Temperature, humidity, light sensing.
GDPR-compliant secure data
GDPR-compliant secure data.
Milesight D2D
Milesight D2D, gateway-free control.
FoV 129° × 93°
FoV 129° × 93°.
Install height 2.4 m
Install height 2.4 m to 4 m.
Technical data
VS321 specifications
| Specifications | |
|---|---|
| Technology | PIR, RGB camera, embedded AI |
| Recognition Rate | Up to 95% |
| Field of View | 129° horizontal, 93° vertical |
| Installation Height | 2.4 m ~ 4 m |
| Required Illumination | 50 lux |
| PIR Measuring Angle | 115° |
| PIR Detection Area | Radius 4 m (15 °C, 3 m installation height) |
| Specifications | |
| Temperature | −40 °C ~ +125 °C, ± 1 °C, 0.1 °C resolution (CMOSens MEMS) |
| Humidity | 0 ~ 100% RH, ± 2.5% RH, 0.5% RH resolution (CMOSens MEMS) |
| Light | Photodiode, bright / dim status |
| Specifications | |
| Protocol | LoRaWAN®, Milesight D2D |
| Antenna | Internal antenna |
| Frequency | CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4 |
| Tx Power | 16 dBm (868 MHz) / 20 dBm (915 MHz) / 19 dBm (470 MHz) |
| Sensitivity | −137 dBm @300bps |
| Mode | OTAA/ABP Class A |
| Specifications | |
| USB | 1 × Type-C port (temporary power supply) |
| LED Indicator | 1 × status indicator |
| Button | 1 × multi-function button |
| Configuration | Bluetooth |
| Advanced Feature | Milesight D2D controller, data storage (2045 entries), data retransmission, data retrievability, threshold alarm, hibernate mode |
| Specifications | |
| Power Supply | 4 × 2700 mAh ER14505 Li-SOCl2 replaceable batteries |
| Battery Life | ~11.3 years (SF7, EU868); ~10.8 years (SF7, US915); ~7.5 years (SF10, EU868 & US915) |
| Operating Temperature | 0 °C ~ +30 °C |
| Relative Humidity | 0 ~ 95% (non-condensing) |
| Ingress Protection | IP30 |
| Housing & Colour | Plastic (UL94 V2), white or black (optional) |
| Dimensions | 100 × 100 × 26 mm |
| Weight | 145 g (batteries excluded) |
| Installation | Ceiling mounting (screws or adhesive) |
| Specifications | |
| Regulatory | CE, FCC |
| Environmental | RoHS (planned) |
| Privacy | GDPR compliant |
No specification rows match the filter.
Applications
VS321 applications
Open Offices
Monitors several workstations at once for hot-desking and flexible seating. Real-time occupancy data optimises space and cuts equipment cost.
Meeting Rooms
Tracks room and desk occupancy to improve scheduling and use. Automated lighting and HVAC respond to actual presence.
Retrofits
Upgrades existing offices without wiring or construction. Adhesive or screw ceiling mount makes rollout quick and low-cost.
Energy
Supports ESG goals by driving efficient lighting and HVAC. Continuous monitoring reduces waste for a greener workspace.
Questions
VS321 questions and answers
How is the VS321 powered?
~11.3 years (SF7, EU868), according to the specification.
What ingress protection does the VS321 have?
IP30, according to the specification.
What is the operating temperature of the VS321?
–40 … +125 °C, according to the specification.
What lorawan does the VS321 provide?
LoRaWAN®, Milesight D2D, according to the specification.
Request a quote
VS321 price and lead time
Tell us the quantity and the delivery country. We reply within one working day with the price, stock at the nearest warehouse and the dispatch date.
European headquarters+370 655 51654[email protected]
United Kingdom branch+44 7425 726932[email protected]
- Company code306755852
- VAT numberLT100017217417
- Official distributor
- 17+ years in IoT
- Installation support
Manufacturer warranty24 months
