Freezer is too warm
According to FDA, too warm freezer predisposes food to harmful growth of microbes and shortens the lifespan of food products. Too warm fridge also cools down food too slowly and freezing doesn’t happen fast enough.
Freezer is too cold
A too cold freezer can impose problems. Cooling takes a lot of energy, but freezing temperatures can also change the taste and texture of food. This does not make it inedible or dangerous, but it’s a good idea to take this into account, especially when freezing meals – choose airtight containers for this purpose. On the other hand, a freezer that is too warm exposes food to growth of harmful microbes.
Proper temperature in a chest freezer
Temperature in a chest freezer should be the same as in a regular freezer, at -18 °C. Often, a chest freezer could be used to freeze larger quantities of food. If you know that you will fill up to freezer with more food, you should set temperature to below -20 °C.
If you have a chest freezer, place one Ruuvi sensor at the top of the freezer and the other at the bottom of the freezer. Sometimes the built up frost in the freezer can cause the cover seal to leak. In this case, we suggest placing the Ruuvi’s measuring device at the top of the freezer to detect undesirable changes in temperature.
Energy efficiency of a freezer
Monitoring the temperature in a freezer is beneficial as you can increase the energy efficiency of this home appliance. Refrigeration appliances consume a lot of energy, especially if they cool a space unnecessarily. In addition, the frost building up to the walls of a freezer decreases the energy efficiency of the machine significantly. The temperatures mentioned in this article are sufficient for food safety. If your freezer is colder than the temperatures mentioned in this article, you can warm up your freezer a bit and hence decrease your energy consumption.
A large amount of ice accumulated in the freezer increases energy consumption and weakens the operation of the freezer. The picture below shows how the temperature before defrosting varies by about 4 degrees and only one degree after defrosting.
With Ruuvi’s sensors, you’ll know exactly what temperatures your refrigerators are running at. The graph feature in the Ruuvi app is perfect for monitoring the temperature of your fridge or freezer. You can clearly see at which temperatures your refrigerator is at its coldest or warmest. This allows you to conveniently adjust the appliance’s thermostat to match actual temperatures.
Monitor the temperature in your freezer!
With RuuviTag, you can always know accurately the temperature in your freezer.
39,90€
Ruuvi is based in Finland. If you’re an EU consumer, VAT is included. If you’re a non-EU customer, you don't pay VAT. If you're an EU business, insert your VAT ID at checkout.
In stock
RuuviTag Sensor (4in1)
| Quantity | Unit Price(€) |
|---|---|
| 1 | 39,90 |
| 2 | 36,90 |
| 3-5 | 34,90 |
| 6-8 | 33,90 |
| 9-12 | 32,90 |
| 13-25 | 31,90 |
| 26-99 | 31,50 |
Are you looking for bigger quantities? Contact us for pricing.
Made in Europe, Finland.
Worldwide free shipping on orders over 100 €.
RuuviTag is a Bluetooth sensor that monitors environmental conditions and sends the data directly to your mobile device. The Ruuvi Station mobile app allows you to view real-time accurate measurements and historical graphs. The app also provides customisable alerts to notify you of critical conditions, such as a melting freezer, excessively high bedroom temperatures that could disrupt sleep, or elevated humidity levels in your basement.
Onboard Sensors (4-in-1)
Temperature: °C, °F, K; typical accuracy ±0,2 °C @ 5-60 °C (±0.36 °F @ 41-140 °F).
Air humidity: RH-%, g/m3, dew point; typical accuracy ±3 RH-% @ 20…80 %. Range: 0-95 %.
Air pressure: Pa, hPa, mmHg, inHg; typical accuracy ±1 hPa. Range: 500-1155 hPa.
Motion: Movement counter. Counter is incremented when acceleration exceeds the threshold on any axis.
Operational Conditions
Operating temperature (with stock battery): -20 °C to +70 °C (-4 °F to 158 °F).
Absolute maximum operating temperature: -40 °C to +85 °C (-40 °F to +185 °F).
Housing: IP67, splash-proof, non-condensing location.
Battery: User-replaceable CR2477 (included). Supports extended operating temperature range battery CR2477T.
Battery lifespan: Estimated 12 to 24 months.
Certifications: CE, FCC, ISED, TELEC, IFETEL, NOM, RTCA DO-160 category H, RoHS, IC, HVIN, IMDA, OFCA, ICASA, POTRAZ.
Bluetooth range: 5-20 meters (indoor), 20-100 meters (outdoor). The sensitivity of the receiving mobile device’s antenna, obstacles and wall materials affect the range. For increased range, use the Ruuvi Gateway router as a receiver.
App Features
Free and easy: User-friendly free app, signing in is optional.
Platforms: Android and iOS.
Alerts: Configurable Bluetooth push alerts with customisable messages.
Real-time measurements: Track data in real time.
Historical data: Detailed historical graphs available for up to 10 days (offline).
History export: 10-day history export.
Dashboard: See all your sensors at a glance.
Personalise sensors: Use custom backgrounds and names.
Multilingual: Available in English, Finnish, Swedish, French, and German.
Compatibility
Integrations: Victron Energy, Home Assistant, Homey, and more.
Remote monitoring: When not within Bluetooth range, online remote monitoring is available with the Ruuvi Gateway and Ruuvi Cloud, both sold separately.
Technical Specifications
Data sheet: Download (pdf)
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