SUPPORT

If you are trying to add a new sensor to the app but the app cannot find the sensor, try the following:

1. Make sure your OS settings for the app are correct, especially on Android. Nearby devices, Bluetooth, location, notifications, and background activity settings can affect setup.
2. Set up one new unpaired sensor at a time. Keep other unpaired sensors at least 15 feet away or in another room until setup is complete.
3. Close all other apps, reboot your phone or tablet, then try again.
4. If possible, try on another phone or tablet.
5. Check whether the battery is dead by removing the battery and inserting it again. The positive side should face away from the black circuit board. Two LED blinks indicate full or nearly full.
6. Try uninstalling and reinstalling the app. Note: If you have previously added other sensors to the app, the data will be lost. You may want to contact us before performing this step.

If the problem persists, please contact us at support@vitalnomad.com.

Install the tempi.fi app, open the app, choose add sensor, and hold the sensor over the phone or tablet during setup. For best results, set up one new unpaired sensor at a time and keep other unpaired sensors at least 15 feet away or in another room until setup is complete.

If a new reading does not show up after a few minutes, open the app and hold the sensor within an inch of your phone or tablet for at least a few minutes to rule out distance issues.

Also make sure your OS settings for the app are correct, especially on Android. The app must be open or running in the background so it can receive sensor data, store it, and display alerts.

If you continue to have problems, please contact us at support@vitalnomad.com.

Yes. If the phone or tablet is out of Bluetooth range, the sensor continues recording readings locally. When the app comes back into range, it syncs the missing readings stored on the sensor.

If an alert condition occurred while the phone or tablet was out of range, the app will alert after it comes back into range and syncs the missing readings.

When you remove the battery, all history stored in the sensor is erased. History that has already synced to the app is preserved until you choose Remove Sensor in the app settings.

Currently, tempi.fi sensors are available on Amazon.

Yes. There is a 30 day money-back guarantee. See details here.

Yes. There is a 1 year limited warranty. See details here.

Typically, the battery will last between 1 and 2 years. In freezers, battery life is still usually over 1 year when using the recommended battery that comes with the sensor.

The sensor uses a 3 Volt Panasonic CR2477 lithium coin cell battery. Open the app and wait 2 minutes to sync recent readings, remove the battery cover, slide out the old battery, and slide in the new battery with the positive side facing away from the black circuit board.

Note: Removing the battery erases all data stored on the sensor. History that already synced to the app will remain in the app.

Recommended replacement battery: Panasonic CR2477 from DigiKey.

This battery test erases local storage on the sensor, but it does not erase data already stored in the app.

1. Remove the back cover and pull out the black circuit board.
2. Remove the battery from the holder.
3. Put the battery back in the holder with the positive side facing away from the black circuit board.
4. Two LED blinks indicate full or nearly full.
5. Three LED blinks indicate less than half.
6. No blink usually indicates a dead battery.
7. If it blinks a number other than 2 or 3, please contact us.

Keep coin cell batteries away from children. Swallowing a lithium coin cell can cause serious injury. Follow the battery safety instructions in the T3 User Guide and dispose of used batteries properly.

We use Sensirion temperature and humidity components. Typical temperature accuracy is +/- 0.2°C for 0 to 65°C and +/- 0.6°C for -30 to 0°C. Typical relative humidity accuracy is +/- 2% between 20-80% RH and +/- 3% outside that range.

For worst case details, view the SHT40 Specification.

The sensor takes a new temperature and humidity reading every minute and stores it in the sensor's onboard memory. If the sensor is out of range, it will sync missing readings when it comes back into range.

The app must be open or running in the background to retrieve data from the sensor.

The app stores a virtually unlimited history of readings after they sync from the sensor's onboard memory. The chart lets you view the full stored history and inspect samples at specific times.

The T3 sensor records one temperature and humidity reading every minute and stores up to 40 days of readings onboard. When the sensor's onboard storage is full, the oldest readings are replaced by newer readings.

Yes. The app stores a virtually unlimited number of synced readings. The chart lets you view the full stored history and inspect samples at specific times.

The operating temperature range is -30 to 60°C (-22 to 140°F).

The operating relative humidity range is 0-100%.

tempi.fi sensors are factory calibrated and normally do not need adjustment. If you need to compare or adjust a sensor, use a calibrated reference sensor, an ice-water test for temperature, the salt method for relative humidity, or a hygrometer calibration kit.

If a required adjustment is unusually large, please contact us at support@vitalnomad.com.

After calibrating the sensor, historic readings will automatically adjust accordingly.

Yes. The app provides a simple switch to display Celsius or Fahrenheit.

Yes. Phone notifications can be configured in the app for high and low temperature or humidity limits. The phone or tablet must be within Bluetooth range and app/OS notification permissions must allow alerts.

If an alert condition occurs while the phone or tablet is out of range, the app will alert after it comes back into range and syncs the missing readings.

Alerts do not appear while the app is open in the foreground because you are already looking at the current readings in the app. Alerts repeat approximately every 30 minutes while the alert condition continues.

To quickly test alerts, make sure the alert settings are outside the current reading so the sensor is in an alert state.

Adjust the high or low alert threshold by 1 degree or 1 percent to reset the 30 minute repeat wait. Then open another app, such as a web browser, so the tempi.fi app is in the background but not terminated.

You should receive an alert within a few minutes. It should repeat about every 30 minutes while the alert condition continues.

Yes. The app stores synced sensor data and can export readings in CSV format for use in spreadsheet tools such as Excel or Google Sheets.

Yes. The FCC ID is 2ATTG-T2.

Yes. The sensor can be used in many refrigerators and freezers within its operating temperature range. Expect reduced Bluetooth range through appliance walls. In freezers, battery life is still usually over 1 year when using the recommended battery that comes with the sensor.

The current sensor uses Bluetooth and connects directly to a mobile phone or tablet. No Wi-Fi router, internet connection, cellular connection, account, or subscription is required for local monitoring.

No. The sensor works directly with the mobile app over Bluetooth. No Wi-Fi router, internet connection, account, or subscription is required for local monitoring.

The theoretical Bluetooth range is about 300 feet with no obstacles. Typical range is about 60-120 feet depending on walls, metal appliances, building materials, piping, distance, radio interference, and sensor placement.

Refrigerators, freezers, and food can reduce range because the signal must pass through appliance walls and moisture-containing contents.

The current product experience is local Bluetooth monitoring. Whenever you are within Bluetooth range, the mobile app will sync with the sensor. If you are not within Bluetooth range, the sensor continues recording locally and your mobile app will sync missing readings when it comes back into range.

The sensor is approximately 1.57" x 1.57" x 0.59" (40 x 40 x 15 mm).

One sensor weighs less than 1 ounce, about 22 grams.

Yes. You can put thread, string, ribbon, or a lanyard through the hole and hang it almost anywhere.

Yes. You can use adhesive to attach the sensor to a surface.

A sensor measures the conditions at its own location. Temperature and humidity can vary by shelf, room, airflow, sunlight, appliance position, or moisture source. Use more than one sensor when you need to monitor multiple locations or uneven conditions.

Yes. Do not block the sensor hole. The hole exposes the temperature and humidity sensing components to the environment.

No. The sensor is not waterproof or water resistant. The battery cover is not airtight, and liquid entering the case can damage the circuit board or battery.

Yes. The sensor communicates with a mobile phone or tablet over Bluetooth.

• The tempi.fi app can be installed on iPhone 5 or later, running iOS version 10.0 or higher. It may also be installed on iPod Touch 5th gen or later, or iPad 4 or later, running iOS 10.0 or higher.
• The tempi.fi app may be installed on phones or tablets running Android version 6.0 (Marshmallow) or higher.
• Please refer to the App Store or Google Play for further information on app compatibility with your device.
• tempi.fi does not work with your Mac or PC.

The tempi.fi app can be downloaded for free from the Apple App Store for iOS devices or Google Play for Android devices. Use the search term tempi.fi to find the app. If you are viewing this on a mobile device, you can find the app here.

Yes. The app can monitor multiple sensors. Fewer than 20 sensors is the practical target, depending on the power and Bluetooth performance of the mobile device.

Yes. The same sensor can be monitored by multiple phones or tablets running the tempi.fi app.

Yes. Multiple people can monitor the same sensor using their own mobile device.

The latest T3 User Guide is available at www.tempi.fi/t3/guide. It includes setup, battery, placement, Bluetooth range, safety, regulatory, and troubleshooting information.

Key references include FCC ID 2ATTG-T2, IC notice, EU RED, RoHS, WEEE, the T3 User Guide, Terms of Service, Privacy Policy, EULA, and warranty information.