Milesight VS121 AI Workplace Occupancy Sensor

The Milesight VS121 is an AI workplace occupancy sensor designed to help businesses understand how offices, rooms and shared spaces are being used. It is suitable for Irish offices, meeting rooms, retail premises, universities, public buildings, airports and smart building projects where accurate occupancy and utilisation data is required.

The VS121 uses AI identification and analysis technology to detect people, occupancy, movement and dwell time. Milesight states that it can reach up to 98% recognition rate, making it suitable for workplace utilisation, room occupancy monitoring and data-driven space planning.

For privacy-conscious sites, the LoRaWAN® version transmits counter values rather than image data, helping reduce privacy concerns. Milesight also describes the VS121 as GDPR-compliant without images collected.

Key Features

• AI workplace occupancy detection
• Up to 98% recognition rate
• People counting and occupancy detection
• Dwell time detection
• Regional people counting
• Up to 16 mapped detection regions
• Bi-directional line-crossing people counting
• People flow analysis
• Smart U-turn counting to reduce redundant counts
• LoRaWAN® and PoE / Ethernet versions
• Wi-Fi configuration on LoRaWAN® version
• Milesight IoT Cloud support for LoRaWAN® version
• HTTP(S), MQTT(S), HTTP API and HTTPS support on PoE version
• BACnet/IP native integration on PoE version
• Standard and high-ceiling mounting versions

Milesight lists support for regional people counting, occupancy detection, dwell time detection, up to 16 mapped regions, bi-directional line crossing, U-turn counting, local data storage and data retransmission.

Standard and High-Ceiling Versions

The VS121 is available in different versions for different mounting environments.

The standard version supports an installation height of 2.5 m to 4 m, while the high-ceiling mount version supports 5 m to 7 m installation height. This makes it suitable for normal office ceilings as well as larger Irish buildings such as retail stores, public buildings, airports, campuses and high-ceiling commercial spaces.

LoRaWAN® Version

The VS121 LoRaWAN® version is ideal for low-power smart building and IoT deployments. It works with standard LoRaWAN® gateways and network servers and supports Milesight IoT Cloud for easier device management. It is also equipped with Wi-Fi for web GUI configuration.

This version is well suited to:

• Meeting room occupancy monitoring
• Office utilisation analytics
• Hot desk and shared workspace monitoring
• Smart building occupancy data
• Multi-site IoT deployments
• Privacy-focused occupancy projects

PoE / Ethernet Version

The VS121-P PoE version is designed for installations where Ethernet connectivity, richer interfaces and deeper building integration are required. Milesight states that the VS121-P supports Ethernet transmission, DI, DO and RS485 interfaces, HTTP(S) and MQTT(S) data push, remote management via Milesight DeviceHub or Milesight Development Platform, and BACnet/IP integration for building management systems.

This version is suitable for:

• Smart buildings
• Building management system integration
• Retail analytics
• Commercial offices
• Facilities management
• Energy optimisation projects

Irish Applications

The Milesight VS121 is suitable for:

• Offices and corporate buildings
• Meeting rooms and boardrooms
• Hot desking areas
• Open-plan workspaces
• Retail stores
• Shopping centres
• Airports and transport hubs
• Universities and campuses
• Libraries and public buildings
• Smart buildings and BMS projects
• Energy efficiency and HVAC optimisation

Milesight highlights use cases including meeting room occupancy optimisation, open office space utilisation, workplace space planning and occupancy-based building automation.

Why Choose the Milesight VS121?

The VS121 helps organisations make better decisions about how space is used. It can identify underused rooms, crowded areas, ghost bookings, dwell time patterns and people flow trends. This data can support office redesign, cleaning schedules, hot desk planning, HVAC control, lighting automation and long-term facilities planning.

For Irish businesses moving to hybrid working, the VS121 provides useful data on actual occupancy rather than relying on room booking systems alone.

TITAN IoT Supply & Support

TITAN IoT supplies Milesight IoT sensors, gateways and smart building solutions across Ireland. We can help with selecting the correct VS121 version, matching it with LoRaWAN gateways, planning PoE or Ethernet deployments, and supporting integration into smart building, BMS and occupancy monitoring systems.