The M2 is a legacy device. The M2 sensor was released in 2018 and discontinued in 2022. It is no longer available for purchase from the Minut store. Existing M2 sensors continue to receive customer support until at least 2029.
If you are looking to expand your monitoring setup, consider the M3, Minut's current sensor.
If the app shows your M2 sensor as offline, start with the power switch check before anything else.Then work through the steps below in order.
Check the power switch first. The M2 has a physical power switch on the back of the sensor (accessible after removing it from the mounting plate). If this switch is set to OFF, the sensor will not power on, will not charge, and will appear offline regardless of anything else. Turn it ON and wait 30 seconds before doing anything else.
Check the status light
The light colour tells you exactly what is wrong.
Light shown | What it means | What to do |
Green | Sensor is actually online; the app may not have refreshed | Wait a few minutes and refresh the app. If still showing offline, reboot your router. |
White (circling) | Connecting; the sensor is trying to reach the Minut server | Wait up to 2 minutes. Do not turn the sensor off during this. |
2 Red blinks | Cannot connect to Wi-Fi at all | Move closer to the router. Confirm the network is 2.4 GHz. Update Wi-Fi settings |
3 Red blinks | Connected to Wi-Fi but cannot reach the Minut server | Reboot your router. Check whether other devices have internet access. |
1 Red blink | Battery empty | Charge via Micro-USB with the power switch set to ON. |
No light | Sensor is off or power switch is set to OFF | Check the power switch first. If switch is ON, charge via Micro-USB. |
For the full M2 LED reference see LED indicator lights - M2 sensor.
Wifi troubleshooting
If the sensor has power but is not connecting, work through these steps in order.
Reboot the router
Turn the router off, wait 20 seconds, then plug it back in. Once it has fully restarted, press the front button on the sensor to check if it reconnects.
This resolves most offline sensor issues
Power cycle the sensor
Remove the sensor from the mounting plate. Turn the power switch to OFF, wait 10 minutes, then turn it back ON. Wait 30 seconds and press the lens to check the status light.
Check the sensor is within range of the router
Move the sensor closer to the router temporarily to test signal strength. If it reconnects when close, the mounting location may be too far. You can check the Wi-Fi signal strength rating in the app under the sensor’s detail view.
Weak Wi-Fi signal also increases battery drain
Confirm the network is 2.4 GHz
The M3 sensor supports 2.4 GHz Wi-Fi only; it does not work on 5 GHz networks. If your router broadcasts both frequencies under the same name, rename them so the sensor can connect to the correct band. Then update Wi-Fi settings.
Check other devices on the same network
If other devices also have no internet access, the issue is with your router or internet connection not the sensor. Contact your internet provider.
Update wifi settings
If your router’s Wi-Fi name or password has changed, the sensor will go offline because it can no longer authenticate with the network. Updating Wi-Fi settings restores the connection without deleting any data.
Open the Minut app:
Open the Minut app
Click on Properties in the bottom menu
Select the rental unit
Scroll down and under Devices, tap the Minut sensor you want to update Wifi settings for
Tap on the gear icon in the top right corner (This is important as there are many settings menus)
Tap on Advanced
Towards the bottom, you will find Update Wifi settings
Follow the instructions in the app
Remember: the power switch must be ON for setup mode to work. If you press the lens and nothing happens, check the switch on the back first.
For full Wi-Fi requirements and additional troubleshooting, see Wi-Fi and connectivity.
Battery issues
A sensor with a critically low battery will go offline. The M2 gives a single red blink when pressed and the battery is flat. To charge:
Charge via Micro-USB — not USB-C. Make sure the power switch on the back is set to ON before connecting the charger. The sensor will not charge if the switch is OFF. A full charge takes approximately 6 hours from empty. The LED on the back blinks green while charging and turns solid green when fully charged.
For full battery information see M2 charging and battery information.
If the sensor drains unusually fast, running flat within a few days under normal use, this may indicate a hardware issue. Contact support with your serial number and a description of the drain pattern.
If nothing has worked
If the sensor is still offline after all the steps above, try a reinstall first, it does not delete any of your data. Move to a factory reset only if reinstalling does not resolve it.
Reinstall the sensor
Delete the sensor from the rental unit in the app, then go through the installation flow again. All rental unit settings and event history are preserved.
Factory reset the sensor
Only if reinstalling does not resolve the issue. A factory reset wipes the sensor completely, all stored Wi-Fi credentials and account associations are removed. Rental unit data in your account is not affected.
For full instructions on both, see Reinstalling and factory resetting the M2 sensor.
Contact Support
If you have worked through all the steps above without success, contact the Minut support team.
Email hello@minut.com with:
Your Minut account email address
The MAC address of the sensor
Make and model of your router
What colour the sensor shows when you press the front button
Which steps you have already tried from this article
Whether other devices on the same network have internet access