Wireless Ease, Boundless Sees
PIR
RGB
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.
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.
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.
Accurately detects human presence with
embedded AI algorithm.
GDPR-compliant with secure LoRaWAN® data transmission.
People Counting and Desk Occupancy to fit diverse workplace needs.
Powered by 4 ER14505 batteries with sleep mode for long-term use.
Built-in sensors provide more environmental insights for smarter automation.
Act as a D2D controller to trigger other devices directly without gateway.
Available in two colors to blend seamlessly with different interiors.
Support mobile app configuration for quick installation and maintenance.
VS321 combines PIR motion sensing with an RGB camera and embedded AI algorithms to achieve up to 95% occupancy detection accuracy.
VS321 performs occupancy detection at configurable intervals to deliver stable monitoring, making it perfect for daily workstation management.
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.
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.
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.
Adaptable to various office environments, VS321 help reduce costs and boost efficiency.
Empower your workspace with smart, sustainable, and easy-to-deploy technology.
Milesight Device-to-Device Control enables direct communication between devices without the need for a gateway, making it easy to build an efficient and intelligent office environment that improves facility management and employee comfort.
When VS321 detects occupancy, it works with WS series smart switches to control lighting based on actual usage. This helps reduce energy consumption while enhancing the workplace experience.
Using occupancy data from VS321, the HVAC system automatically adjusts temperature and airflow. This ensures a consistently comfortable environment while optimizing energy efficiency.
Milesight Development Platform simplifies IoT deployments and management with plug-and-play device configurations, batch operations for multi-device handling, and API & webhooks for custom integration and application development.
Mileisight DeviceHub is a all-in-one platform that allows you to manage your devices and make customized settings remotely, while ensuring highest levels of privacy and security.
Adhesive Backed Installation
Screw Installation
Successfully Installed
Turn Invisible Scenes Into Visible Data, Gain More
Insights And See The Future.
| Measurement | |
|---|---|
| People Counting & Occupancy Detection | |
| 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) |
| Recognition Rate | Up to 95%1 |
| Temperature | |
| Operating Principle | Digital CMOSens® technology (MEMS) |
| Measuring Range | -40 °C~125 °C |
| Accuracy | ±1 °C |
| Resolution | 0.1 °C |
| Humidity | |
| Operating Principle | Digital CMOSens® technology (MEMS) |
| Measuring Range | 0~100 %RH |
| Accuracy | ± 2.5 %RH |
| Resolution | 0.5 %RH |
| Light | |
| Operating Principle | Photodiode |
| Status | Bright/Dim |
| Transmission | |
| 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 |
| Others | |
| USB | 1 × Type-C Port for Power Supply |
| LED Indicator | 1 × Status Indicator |
| Button | 1 × Multi-function Button |
| Software | |
| Configuration | Bluetooth |
| Advanced Feature | Milesight D2D Controller, Data Storage (2045 entries), Data Retransmission, Data Retrievability, Threshold Alarm, Hibernate Mode |
| Physical Characteristics | |
| Power Supply | 1) 4 × 2700 mAh ER14505 Li-SOCl2 Replaceable Batteries 2) DC 5V/ 1A by Type-C Port |
| 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) |
| Approvals(Planned) | |
| Regulatory | CE, FCC |
| Environmental | RoHS |
1Tested within Optimal Detection Range.
2Tested under laboratory conditions and for guideline purposes only.
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