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Milesight

AI occupancy sensor (white / black)

The VS321 is a battery-powered AI sensor for detecting human presence and monitoring environmental conditions. With D2D and LoRaWAN support, it enables intelligent automation and remote management.

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Availability:
In Stock
Shipping time: 31 dni
with VAT without VAT
Price $204.18
incl. 23% VAT

Shipping costs are not included in the price.

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Milesight VS321

Wireless AI occupancy sensor

Modes: People Counting and Desk Occupancy, LoRaWAN® + Milesight D2D, Bluetooth for configuration, built-in T/H/Light.

Milesight VS321 – Occupancy sensor
Up to 95%accuracy (AI)
11.3 yearsbattery life*
2045memory entries
2.4–4.0 mmounting height

AI accuracy: up to 95%

Detection of seated and standing occupancy.

Two operating modes:

People Counting and Desk Occupancy.

Temp. / humidity / light

Built-in environmental sensors.

Ultra-efficient

PIR + hibernation + schedules.

LoRaWAN® Class A

Long range, sensitivity down to −137 dBm.

Bluetooth

Fast configuration and commissioning.

Milesight D2D

Low-latency local scenes.

Privacy

No images/video — GDPR-compliant.

Where the VS321 performs best

Meeting rooms / offices

Hot-desking / desk occupancy

Energy savings (lighting/HVAC)

Local scenes (D2D)

Key specifications
  • Modes: People Counting, Desk Occupancy
  • AI accuracy: up to 95%
  • Mounting height: 2.4–4.0 m
  • PIR range: radius approximately 4 m (typical, mounted at 3 m)
Connectivity and configuration
  • LoRaWAN® Class A, sensitivity down to −137 dBm
  • Milesight D2D — local scenes
  • Bluetooth — configuration
  • Local memory: 2,045 entries + retransmission
Energy & conditions
  • Power supply: 4 × ER14505 Li-SOCl₂ batteries (2,700 mAh) or USB-C 5 V / 1 A
  • Battery life: approximately 11.3 years (laboratory conditions)
  • Environment: 0–30 °C; 0–95% RH (non-condensing) • IP30
Dimensions & mounting
  • Dimensions / weight: 100 × 100 × 26 mm • 145 g (without battery)
  • Mounting: ceiling (screws or adhesive tape)

* Values according to the manufacturer; actual values depend on the environment and configuration.

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