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Sound level sensor

Square Sound

The room sensor that also listens for noise: sound pressure level with threshold alarms, alongside precise temperature and humidity and ten years on one battery.

Square Sound measures sound pressure level in dB, both average and peak, and can raise an alarm when a threshold is crossed or wake on sound. It never records audio: only levels leave the device. Alongside it, precise temperature (±0.2 °C) and humidity (±1.8 % RH) sensing means one device covers acoustic comfort and indoor climate.

Use it where noise matters: classrooms, open-plan offices, hotel rooms and short-term rentals, where a night-time alarm can trigger a call before the neighbours do. 15 mm thick with a 4,000 mAh battery for ten years of operation, NFC for local set-up and Wi-Fi geopositioning to know where it is. Mount with the integrated adhesive or the optional screw kit.

Sensors
Sound pressure level, temperature, humidity
Sound range
45–92 dB SPL
Temperature accuracy
±0.2 °C
Humidity accuracy
±1.8 % RH
Protocol
LoRaWAN 1.0.4, Class A, OTAA
Frequency
EU868 · US915 · AU915 · AS923-1 · AS923-2 · KR920 · IN865
Configuration
NFC (Android) and over the air; alternative VSM apps through the Hugin app or over LoRaWAN
Positioning
2.4 GHz Wi-Fi geopositioning via cloud service
Battery
Built-in LiMnO₂, 4,000 mAh, 10 years
IP rating
IP63
Operating temp
–20 to +60 °C
Dimensions
58 × 58 × 15 mm
Weight
55 g
Mounting
Adhesive, or optional screw mounting kit
  • Levels, never audio: Reports sound pressure only. Nothing is recorded, so it can sit in a classroom or a rented flat.
  • Average, peak and alarms: Track trends over time or act on a threshold the moment it is crossed; wake-on-sound for event detection.
  • Climate included: Temperature and humidity from the same sensor as Square Comfort.
  • Ten years, no maintenance: 4,000 mAh battery in the 15 mm housing.
  • Square screw mounting kit: Deux plaques adhésives pour visser n’importe quel capteur Square là où l’adhésif ne suffit pas — derrière l’appareil ou à côté. Détails