The wireless Efento NB-IoT Logger is designed for monitoring indoor climate conditions. The device measures air quality based on the concentration of volatile organic compounds (VOC) and calculates the IAQ (Indoor Air Quality) using the patented Bosch algorithm. In addition, the sensor measures temperature and relative humidity, which together with the VOC values give a complete picture of indoor conditions.
Efento NB-IoT sensors send data via the mobile network (Narrowband IoT), without the need for additional devices such as routers or gateways. The sensors also have a Bluetooth Low Energy interface, allowing them to be easily configured with a smartphone. They are compatible with all cloud platforms, including Efento Cloud.
Key features:
Air quality: 0–500 IAQ (0–50 Good, 51–100 Average, 101–150 Slightly poor, 151–200 Poor, 301–500 Worse, >500 Very poor)
Temperature: -15 to +70°C, accuracy up to ±0.4°C
Humidity: 0–99% RH, accuracy up to ±4% (0–80% RH)
Pressure: 300–1100 hPa, absolute accuracy ±3 hPa, relative ±0.12 hPa
Measuring interval: 1 minute – 10 days, configurable
Memory: 40,000 readings; oldest data is overwritten when memory is full
Battery: 3 × AA, 6300 mAh, replaceable, up to 5 years maintenance-free
Wireless range: NB-IoT via mobile network, Bluetooth LE up to 100 m (line of sight)
Over-the-air software-updates: via NB-IoT en Bluetooth LE
Benefits:
Efento Cloud: continuous monitoring, alerts when limits are exceeded, reporting and analysis
Long battery life: up to 5 years without maintenance
Lower costs: wireless sensors reduce installation and maintenance costs
Broad sensor portfolio: expand your network with other Efento sensor types
Integration: standard communication protocols for any cloud or mobile platform
Easy installation: configure the logger in under 15 minutes via smartphone
Technical specifications:
Temperature: -15° to 70°C, resolution 0.1°C, drift <0.1°C/year
Humidity: 0–100% RH, hysteresis ±1% RH
Air quality: 0–500 IAQ
Pressure: 300–1100 hPa, accuracy ±3 hPa (absolute), ±0.12 hPa (relative)
NB-IoT: standard B8/B20, multiple bands on request, 3GPP Release 13, power 23 dBm ±2 dB
Bluetooth LE: 2,4 GHz, 2,5 mW (4 dBm), transmissie 1 s
Communication protocol: CoAP, interval 5 min – 10 days, configurable
Dimensions: 124 × 60 × 26 mm
Weight: 0.13 kg
Applications:
Office and building monitoring, laboratories, schools, hospitals, industrial indoor environments, and any situation where accurate wireless measurement of air quality, temperature, pressure and humidity is essential.
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