Bi-directional people counting
Bi-directional people counting.
VS351 Milesight Mini AI Thermopile People Counter
Mini AI Thermopile People Counter
Order codeVS351 In stockOfficial distributor
The VS351 is a Mini AI Thermopile People Counter. The VS351 is a mini AI thermopile people counter for entrances and passages. It has an IP30 housing and an operating range of +15 to +30 °C.
- Measures−30 °C ~ +70 °C
- LoRaWANLoRaWAN®, Milesight D2D
- Power5V/1A via Type-C port (both
- ProtectionIP30
- Operating+15 … +30 °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
VS351 overview
Overview
The VS351 is a mini AI thermopile people counter for entrances and passages. It blends cost-effectiveness, high accuracy, and low power use in a compact body that counts people moving in and out.
Sensor Fusion
The battery version pairs a thermopile with radar, where radar activates the device and the thermopile counts. A built-in temperature sensor keeps performance stable across changing conditions.
AI Counting
An AI algorithm delivers bi-directional counts with up to 90% accuracy. It filters out side-by-side walkers and U-turns, so the data stays reliable in busy doorways.
Versions
A battery version gives a fully wireless install with thermopile and radar. A Type-C version runs on continuous power using thermopile only, ideal for permanent deployments.
Power
Synchronised radar and thermopile operation keeps power use low, and a sleep schedule pauses detection on quiet nights. This ESG-friendly design suits long-term monitoring.
Integration
The Milesight D2D protocol lets the counter control devices such as lights without a gateway. Local storage holds 1,000 records with retransmission to avoid data loss.
Key features
AI accuracy up to 90%
AI accuracy up to 90%.
Thermopile and radar fusion
Thermopile and radar fusion.
100% anonymous
100% anonymous, GDPR compliant.
Milesight D2D
Milesight D2D, gateway-free control.
Snap-together installation
Snap-together installation.
Detection width 3.6 m at
Detection width 3.6 m at 3 m.
Install height 2 m
Install height 2 m to 3 m.
Technical data
VS351 specifications
| Specifications | |
|---|---|
| Technology | Radar (battery version only) & thermopile |
| Installation Height | 2 m ~ 3 m |
| Detection Width | 3.6 m @ 3 m installation height |
| Sensor Adjustable Angle | 0° ~ 90° |
| Best Operating Temperature | 15 °C ~ 30 °C |
| Bi-Directional Counting | Supported, up to 90% accuracy |
| Specifications | |
| Measuring Range | −30 °C ~ +70 °C |
| Accuracy | ± 2 °C |
| 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) / 19 dBm (470 MHz) / 22 dBm (915 MHz) |
| Sensitivity | −137 dBm |
| Mode | OTAA/ABP Class A |
| Specifications | |
| Button | 1 × reset button (internal) |
| Configuration | NFC via mobile app, downlink |
| Advanced Feature | Data storage (1,000 entries), data retransmission, data retrievability, Milesight D2D controller |
| Specifications | |
| Power Supply | 5V/1A via Type-C port (both versions); 4 × 9000 mAh ER26500 Li-SOCl2 replaceable batteries (battery version only) |
| Battery Life | ~1.7 years (SF7, EU868 & US915); ~1.6 years (SF10, EU868 & US915) |
| Operating Temperature | −20 °C ~ +60 °C |
| Relative Humidity | 0 ~ 95% (non-condensing) |
| Ingress Protection | IP30 |
| Dimensions | Type-C version: 70 × 68 × 32 mm; battery version: 188 × 68 × 32 mm |
| Material & Colour | PC (flame retardant), white |
| Weight | Type-C version: 72.3 g; battery version: 383 g |
| Installation | Ceiling or lintel mounting (snap-together, 1/4 inch screw hole) |
| Specifications | |
| Regulatory | CE, FCC |
| Privacy | GDPR compliant, anonymous detection |
No specification rows match the filter.
Applications
VS351 applications
Retail
Stores count footfall at entrances to measure traffic and conversion. The compact counter fits doorways without visible cabling.
Workplace
Offices track movement through corridors and shared areas. Occupancy trends inform space and energy planning.
Smart Buildings
Buildings monitor people flow at passages to manage facilities. D2D links let counts trigger lighting automatically.
Restrooms
Restrooms count entries to schedule cleaning by real demand. Anonymous thermopile detection protects privacy.
Questions
VS351 questions and answers
How is the VS351 powered?
5V/1A via Type-C port (both, according to the specification.
What ingress protection does the VS351 have?
IP30, according to the specification.
What is the operating temperature of the VS351?
+15 … +30 °C, according to the specification.
What measures does the VS351 provide?
−30 °C ~ +70 °C, according to the specification.
Request a quote
VS351 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
