How to Set Up Your Aranet4 HOME CO2 Monitor

10-15 minutes

What You'll Need

  • Aranet4 HOME CO2 Monitor
  • Smartphone with Aranet4 app
  • Two AA batteries (included)
  • Bluetooth enabled on phone

Step-by-Step Setup

  1. Insert Batteries: Open the back panel and install the two AA batteries. The device will power on automatically.
  2. Download Aranet4 App: Install the Aranet4 app from the App Store or Google Play.
  3. Enable Bluetooth: Turn on Bluetooth on your smartphone.
  4. Check Device Bluetooth: Verify the Bluetooth switch on the Aranet4 is in the enabled position.
  5. Add Device in App: Open the Aranet4 app and tap (+) on the "My Devices" page.
  6. Select Your Device: Choose your Aranet4 from the list of discovered devices.
  7. Enter Passcode: When prompted, enter the 6-digit passcode shown on the Aranet4 display.
  8. Configure Settings: Adjust warning thresholds, buzzer settings, and data intervals in the app.

Key Features

  • Measures CO2, temperature, humidity, and atmospheric pressure
  • E-ink display with color-coded CO2 indicator
  • Long battery life (up to 4 years)
  • Stores up to 1 week of data locally
  • Visual and audible high CO2 warnings
  • Pairs with up to 6 devices via Bluetooth
  • No Wi-Fi required - works via Bluetooth

Troubleshooting

  • App can't find device: Ensure Bluetooth is enabled on both the phone and Aranet4 (check switch position).
  • Passcode not appearing: The 6-digit code displays on the Aranet4 screen during pairing.
  • Settings won't save: Keep the Aranet4 within Bluetooth range while adjusting settings.
  • Data not syncing: Data syncs when phone is within Bluetooth range (about 30 feet).
  • Adjust warning thresholds: In app, tap Gear icon > Warning thresholds > Custom to set your preferred levels.