VS321-915M-B - Milesight VS321 Wireless AI Occupancy LoRaWAN IoT Sensor Black
VS321-915M-B - Milesight VS321 Wireless AI Occupancy LoRaWAN IoT Sensor Black
Features
Wireless AI Occupancy Sensor
- Wireless Battery Version (10+ Years of Life)
- Multi Sensors Built-in(T&H, Light)
- Up to 95% Occupancy Accuracy
- Accurate People Counting & Desk Occupancy
- 100% Anonymous Detection
- Unique Milesight D2D Controller
Optimize Workspace with Wireless Occupancy Sensor
VS321 is a battery-powered AI wireless occupancy sensor for occupancy detection, ambient light sensing, and environmental monitoring. With D2D and LoRaWAN® support, it enables smart automation such as lighting controls and remote management. Ideal for offices, meeting rooms, and campuses to enhance comfort, efficiency, and space utilization.
Wireless Occupancy Sensing for Office Space Optimization
Unlock Space Value with Regional People Counting
VS321 detects occupancy at configurable intervals through regional people counting and workstation-level detection, helping optimize layouts, improve space usage, and reduce energy consumption without invasive monitoring. Perfect for organizations seeking wireless occupancy sensors for lighting control, VS321 can automatically adjust lighting based on room occupancy, ensuring energy savings and a smarter workplace.

Smarter Desk Use with Workstation Occupancy Detection
With desk-level occupancy detection, VS321 supports flexible seating and data-driven space planning. As a wireless occupancy sensor for lights, it can trigger workstation lighting only when occupied, keeping unused areas off for maximum efficiency. Battery-powered and easy to install, the sensor delivers interval-based updates and supports 4-8 desk detection zones for effortless office management.
Cutting-Edge Sensing with Less Power
VS321 combines PIR motion sensing with an RGB camera and embedded AI algorithms to achieve up to 95% occupancy detection accuracy.
Reporting Mode
VS321 performs occupancy detection at configurable intervals to deliver stable monitoring, making it perfect for daily workstation management.
Detection Mode
VS321 leverages PIR to trigger the camera only upon motion detection, with AI analyzing images to determine occupancy. This dual-tech approach ensures accurate detection, enables efficient workstation management, and reduces power consumption for longer battery life.

Battery-powered Occupancy Sensor for Easy Installation
Eliminate wiring constraints and adapts easily to complex environments such as old buildings and open office layouts. Require no construction-installs instantly, reducing deployment time and cost while supporting ESG initiatives and low-carbon workspace goals.

Built-in Multiple Sensors for Optimal Comfort
VS321 smart wireless occupancy sensor continuously monitors temperature, humidity, and ambient light to provide actionable insights for a healthier, more comfortable, and energy-efficient environment-supporting your ESG and sustainability goals.

Smart Wireless Occupancy Sensors for Your Spaces
Adaptable to various office environments, VS321 help reduce costs and boost efficiency. Empower your workspace with smart, sustainable, and easy-to-deploy technology.

Specifications
Technical Specifications
| Field of View | 129 ° Horizontal, 93 ° Vertical |
|---|---|
| Installation Height | 2.4m ~ 4m |
| Required illumination | 50 Lux |
| PIR Measuring Angle | 115° |
| PIR Detection Area | Radius: 4 m (15°C, 3m Installation Height) |
| Operating Principle | Digital CMOSens® technology (MEMS) |
| Measuring Range | -40 °C~125 °C |
| Accuracy | ±1 °C |
| Resolution | 0.1 °C |
| Operating Principle | Digital CMOSens® technology (MEMS) |
| Measuring Range | 0~100 %RH |
| Accuracy | ± 2.5 %RH |
| Resolution | 0.5 %RH |
| Operating Principle | Photodiode |
| Status | Bright/Dim |
| 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 |
| Work Mode | OTAA/ABP Class A |
| USB | 1 × Type-C Port for 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 |
| Power Supply | 4 × 2700 mAh ER14505 Li-SOCl2 Replaceable Batteries |
| Battery Life2 (Working 8h per day, 5-min Detection Interval and Report Interval, 25 °C) | Around 11.3 Years (SF7, EU868)Around 10.8 Years (SF7, US915)Around 7.5 Years (SF10, EU868 & US915) |
| Operating Temperature | 0°C ~ +30°C |
| Relative Humidity | 0 ~ 95% (Non-condensing) |
| Ingress Protection | IP30 |
| Housing&Color | Plastic (UL94, V2) & White/Black (Optional) |
| Weight | 145g (Batteries excluded) |
| Dimension | 100 × 100 × 26 mm (3.94 × 3.94 × 1.02 in) |
| Installation | Ceiling Mounting (Screws or Adhesive Backed Fixed) |
| Regulatory | CE, FCC |
| Environmental | RoHS(Planned) |
| Disclaimer | Prolonged operation may lead to overheating and reduced detection performance.Tested under laboratory conditions and for guideline purposes only. |
Not happy? Return within 7 days of delivery for a full refund or exchange. Items must be unused and in original packaging. Contact contact@kwtech.co.nz to arrange.
| Brand | Milesight |
|---|---|
| Product Type | B2B - IoT & Industrial |
| Weight | 0.5 kg |
Shipping Information
- Free NZ-wide shipping on orders over $299
- Standard delivery 2–5 business days
- Rural delivery may take an additional 1–2 days
- Same-day dispatch for orders placed before 2pm (weekdays)
Returns Policy
- 7-day returns on unused items in original packaging
- Faulty or damaged products covered under warranty
- Contact our support team to initiate a return



