The Custodian Sensor – A Wireless Temperature & Humidity Data Logger

Up to 10 years battery time

Up to 10 years in room temperature with a measuring frequency of 15 minutes. If you set the frequency to 30 minutes the battery time will increase to up to 15 years between 0 and 25 degrees celsius.

Syvende far i huset by Erike Werenskiold

Tactile pattern for syvende far i huset for Mobile

Syvende far i huset / Erik Werenskiold / National Museum Oslo

40 meters in all directions

Tactile Pattern Vitruvian Man for Mobile

Vitruvian Man / Leonardo da Vinci / Gallerie dell'Accademia

The range depends on the number of obstacles between the sensor and the cloud connector, as well as the thickness and material type of those obstacles. Indoors, we typically estimate a range of approximately +/- 40 meters in all directions, but we have experienced considerably longer ranges in open exhibition spaces

Get real-time insights with a refreshing frequency every 15 minutes

We won’t disturb your visitors. Our sensors are mighty small.

And only 2.5 mm thin. You can basically hide us anywhere.

Powering through with over 10 years of battery life – catch you in the next decade for a free sensor upgrade!

Specifications

Dimensions

W: 19 mm, L: 19 mm, H: 2.5 mm

Weight

2 g

Accuracy

+/- 3% RH and +/- 0.4 °C

Measurement intervals

15, 30, 45, or 60 min

Operating conditions

Temperature range -40 to 85 °C

Construction

IP68 certified

FAQs

What do you measure?

Add

Our Humidity-sensors measure both the temperature and relative humidity.

Do you have other sensors?

Add

Yes, we also offer a sensor that’s perfect for art transport. This has vibration, location and lux in addition to temperature and humidity.

Where are the sensors made?

Add

Our sensors are designed in Norway and built in Germany

See our full FAQs

Custodian software

Software tailored for cultural heritage

east

Installation

Installation is included without extra charge