24/7 monitoring for homes, small offices & home offices · No WiFi · Instant alerts
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NB-IoT Temperature & Humidity Sensor

Measure ambient temperature in homes, offices and restaurants, or protect freezer and cold-storage temperature with instant alerts when conditions drift out of range.

WSMART temperature and humidity sensor

Battery-only operation

No power wiring. Place it anywhere — a shelf, a nursery, a server closet — and leave it for up to 4 years.

High-accuracy temperature

±0.7°C (−20°C to 0°C) · ±0.3°C (0°C to 60°C).

Precision humidity

±4.5%RH (10–20%) · ±3%RH (20–80%) · ±4.5%RH (80–100%).

Custom threshold alerts

Set independent upper and lower limits. Get instant push and email when readings exceed them.

Optional PT100 probe

A professional-grade probe extends measurement from −200°C to 600°C for extreme environments.

Quick onboarding & data

Plug-and-play deployment. View live data in the app or web and export history anytime.

Technical specifications

Item Specification
Power Battery powered, no power cable
Battery Life Up to 4 years
Temperature Accuracy ±0.7°C (−20°C ~ 0°C); ±0.3°C (0°C ~ 60°C)
Humidity Accuracy ±4.5%RH (10–20%RH); ±3%RH (20–80%RH); ±4.5%RH (80–100%RH)
PT100 Probe Range −200°C ~ 600°C
Alert Channels Mobile app push, Email
Functions Threshold setup, real-time monitoring, historical data view & download

Great for

Homes & offices · Restaurants & bakeries · Freezer rooms · Frozen-meat shops · Server rooms · Engine rooms