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Nano Sensorics TEMPHU

The Wireless LoRaWAN Sensor for Indoor Temperature and Humidity

The Nano Sensorics TEMPHU is a fully wireless indoor sensor for measuring temperature and humidity. It is housed in a robust room sensor enclosure, designed for wall mounting, and powered by 3.6 V AA lithium batteries. An integrated advanced intelligent (AI) calculation algorithm ensures reliable temperature and humidity readings. Data transmission is performed via a Class A LoRaWAN® radio network in accordance with the LoRaWAN® specification 1.0.3.

The TEMPHU is designed for easy commissioning and low maintenance: Configuration is performed "over the air" via downlink, battery life is up to 14 years according to the manufacturer (depending on settings and environmental conditions), and the radio range is up to 10 km.

Precise Measurement of Temperature and Humidity

The TEMPHU continuously measures the most important indoor climate parameters.

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Temperature Measurement

Measuring range from -20 °C to 85 °C with accuracies of ±1 °C or ±0.4 °C depending on the temperature range.

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Humidity Measurement

Measuring range from 0 to 100 % relative humidity (non-condensing), accuracy ±4 % or ±7 % above 80 % RH.

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AI Calculation Algorithm

Integrated intelligent algorithm for reliable measured values as well as automatic self-calibration.

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Up to 14 Years Battery Life

Battery operation without cabling, runtime depending on settings and environmental conditions.

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Over-the-Air Configuration

Settings such as the measurement interval can be adjusted via LoRaWAN downlink, completely without on-site access.

How the TEMPHU Is Constructed

The TEMPHU enclosure is compact at 86 x 86 x 25.5 mm and weighs 88 g without battery or 123 g with battery.

1

Enclosure

Robust plastic enclosure made of ASA+PC-FF with side ventilation slots through which ambient air reaches the sensor. The enclosure is intended for indoor wall mounting and is not washable or paintable.

2

Rear Side with Battery Compartment

The rear cover is released with a screwdriver and reattached with four screws. Behind it is the battery compartment for one or two AA lithium batteries (3.6 V, type ER14505).

3

Wall Mounting

The enclosure is fastened directly to the wall with two suitable screws.

4

Button and LED Indicator

A button is used to reset the device and to immediately attempt reconnection to the LoRaWAN network. A green LED indicates the connection status and can additionally be switched on, off, or toggled for 5 seconds via downlink command.

5

Labeling

On the rear of the sensor there is a label with sensor name, serial number, production date, and QR code.

Reliable Radio Connectivity over Long Distances

The TEMPHU uses LoRaWAN® for energy-efficient and long-range data transmission.

LoRaWAN® 1.0.3

Class A end device with support for OTAA, ABP, ADR, and Adaptive Channel Setup.

End-to-End Encryption

Securing of the radio transmission via LoRaWAN® AES encryption.

Range up to 10 km

Transmission range under line-of-sight conditions; the actual range depends on the environment.

Link Budget & Transmit Power

Link budget from 137 dB (SF7) to 151 dB (SF12), transmit power 14 dBm ±1 dBm (region-dependent).

Adjust Settings via Downlink

After installation, the TEMPHU can be conveniently configured remotely without having to open the device again.

  • Measurement interval (Tx period) adjustable via downlink on port 3
  • Green status LED can be switched on, off, or briefly toggled via downlink
  • Device reset can be triggered via downlink command
  • Multiple settings can be combined in a single downlink message

Simple Commissioning, Low-Maintenance Operation

After inserting the batteries, the TEMPHU automatically connects to the LoRaWAN network.

  1. Open the rear cover with a screwdriver
  2. Insert one or two AA lithium batteries (3.6 V)
  3. Reattach the rear cover with the four screws
  4. Mount the enclosure at the desired location on the wall with two suitable screws
  5. Wait for the connection to be established: The LED flashes 5 times and lights up continuously for 3 seconds upon successful connection before going out

If the connection is not established immediately, the sensor automatically makes further connection attempts after 10 seconds, 60 seconds, 10 minutes, 1 hour, and finally every 24 hours. The button on the device can be used to restart the sensor and trigger an immediate new connection attempt. Apart from occasional battery replacement, the TEMPHU is maintenance-free. The sensor is intended exclusively for indoor use and should not be mounted near ventilation slots, windows, or door openings with constant drafts.

Important Safety Instructions

  • Suitable for indoor use only
  • Do not open, crush, or puncture the enclosure or battery
  • Remove batteries when not in use to prevent leakage
  • Keep the device and battery dry and away from liquids
  • Use only manufacturer-recommended equivalent battery types
  • Do not bend, deform, paint, or place the sensor in a microwave
  • Do not clean with solvents or alcohol; use only a slightly damp cloth
  • Not suitable for metrological or commercial billing purposes

Environmentally Sound Disposal

The TEMPHU falls under the Waste Electrical and Electronic Equipment Directive (WEEE Directive 2012/19/EU). The device and its components must be disposed of separately from household and industrial waste at a local collection point. The battery must be disposed of separately.

Areas of Application

  • Indoor climate measurement in buildings
  • Smart buildings
  • Government buildings
  • Public buildings
  • Banks
  • Industrial facilities and factories

The Nano Sensorics TEMPHU combines precise temperature and humidity measurement, battery-powered wireless LoRaWAN connectivity, and long battery life in a compact, low-maintenance sensor – suitable for climate monitoring in public, commercial, and industrial buildings.

Frequently Asked Questions

What is the Nano Sensorics TEMPHU and what is it used for?

The TEMPHU is a battery-powered, wireless LoRaWAN sensor for measuring indoor temperature and humidity. It is suitable for public and commercial buildings as well as industrial facilities where the indoor climate is to be monitored.

How long does the battery last?

According to the manufacturer, the battery life is up to 14 years, depending on the selected settings and environmental conditions. The sensor is powered by one or two 3.6 V AA lithium batteries (type ER14505).

Can the TEMPHU also be installed outdoors?

No. The TEMPHU is intended exclusively for indoor use and should not be mounted near ventilation slots, windows, or door openings with constant drafts.

How are the measurement interval and other settings configured?

Configuration is primarily performed via LoRaWAN downlink message on port 3, for example to adjust the measurement interval, control the green LED, or reset the device. Optionally, configuration via NFC directly on the device is also possible.

Which LoRaWAN frequency bands are supported?

By default, the TEMPHU supports the European frequency band EU863–870. Optionally, the device is also available for the regions US902–928, AU915–928, EU433, RU864, or IN865.

Is the TEMPHU maintenance-intensive?

No, according to the manufacturer the sensor is maintenance-free apart from occasional battery replacement.

How long is the warranty valid?

The manufacturer grants a warranty of 2 years from the date of manufacture, provided that transport, installation, storage, and operating conditions are observed. An extension of the warranty is possible for an additional charge.

Questions about the Humidity & Temperature Sensor TEMPHU?

Our support team in Germany provides free advice on selection, installation, and configuration.

Datasheets
Datasheet 1

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Datasheet 1 (606.92 KB)
Datasheet 2

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Datasheet 2 (931.13 KB)

Nano Sensorics TempHu

General Data

  • Radio-based room sensor for measuring temperature and relative humidity
  • Designed for wall mounting in indoor areas
  • Fully wireless operation
  • LoRaWAN® communication according to LoRaWAN® 1.0.3
  • LoRaWAN® Class A end device
  • Integrated intelligent AI calculation algorithm for reliable measurement
  • Automatic self-calibration
  • Configuration via radio (Over-the-Air)
  • Robust plastic enclosure
  • Suitable for smart buildings, public buildings, banks, industrial facilities and factories

Temperature Measurement

  • Measuring range: -20 °C ~ +85 °C
  • Accuracy:
    • max. ±1 °C at -20 °C ~ -10 °C
    • max. ±0.4 °C at -10 °C ~ +85 °C

Humidity Measurement

  • Measuring range: 0 ~ 100 % RH (non-condensing)
  • Accuracy:
    • ±4 % RH at 20 °C and >80 % RH
    • ±7 % RH at 20 °C

Sensor & Data Recording

  • Integrated temperature sensor
  • Integrated humidity sensor
  • Configurable sampling interval
  • Configurable data transmission interval
  • Configuration via downlink
  • NFC configuration optional

Power Supply

  • Battery operation with 3.6 V AA lithium batteries
  • Battery configuration: 1 × 3.6 V
  • Battery type: ER14505 AA Lithium
  • Battery capacity: 2400 mAh per cell
  • Expected battery life: up to 14 years, depending on configuration and environmental conditions

LoRaWAN® & Radio

  • Radio technology: LoRaWAN® 1.0.3
  • Device type: Class A end-device
  • LoRaWAN® end-to-end encryption: AES
  • Supported activation: OTAA, ABP
  • Adaptive data rate: ADR
  • Adaptive Channel Setup
  • Standard radio region: EU863-870
  • Optionally supported regions: US902-928, AU915-928, EU433, RU864, IN865
  • Link budget: 137 dB (SF7) to 151 dB (SF12)
  • Transmit power: 14 dBm ±1 dBm, region-dependent
  • Communication range: up to 10 km under line-of-sight conditions
  • Actual range depending on environmental conditions

Receiver Sensitivity

  • LoRa: up to -132 dBm at Spreading Factor 12 and 293 bit/s
  • FSK: up to -118 dBm at 5 kHz frequency deviation and 1.2 kbit/s

Data Transmission

  • Temperature data: 2 bytes
  • Humidity data: 1 byte
  • Battery data: 2 bytes
  • Temperature transmission with integer and decimal place information
  • Relative humidity as integer value from 0 to 100 %
  • Battery voltage is transmitted with integer and decimal places

Mechanical Data

  • Dimensions: 86 × 86 × 25.5 mm
  • Weight without battery: 88 g
  • Weight with battery: 123 g
  • Enclosure material: ASA+PC-FF plastic
  • Mounting: wall mounting

Environmental Conditions

  • Storage temperature: -40 °C ~ +85 °C
  • Humidity measurement: 0 ~ 100 % RH, non-condensing

Areas of Application

  • Indoor monitoring
  • Smart buildings
  • Government buildings
  • Public buildings
  • Banks
  • Industrial facilities
  • Factories

Manufacturer information:

UAB “Nano sensorics” 

Elektrenu str. 7 

51193 Kaunas
Litauen 

Telefon: +370 61461649 

Email: info@nanosensorics.com

Responsible person:

Didactum® Security GmbH

Im Mühlenfeld 4

48163 Münster
Deutschland

Fon: (+49) 250 19 71 63 54 / (+49) 171 33 11 577

Email: info@didactum-security.de

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