Bluetooth Pairing & Re-Pairing TankMaster

Overview

TankMaster pairing is performed inside the TankMaster app.
You do not pair TankMaster through your phone’s Bluetooth settings.

Each TankMaster has a unique Bluetooth device name that begins with TM-,
which is printed on the back of the sending unit.

When You Need This

• First-time setup
• Pairing an additional TankMaster
• Reconnecting after power loss
• Using a new phone or tablet

Before You Start

• Ensure the TankMaster is powered on
• Have the TankMaster app installed
• Know the TM-XXXX Bluetooth name printed on the unit
• Be within a few feet of the TankMaster

Power-Up Indicators

• Battery units: Blue LED flashes briefly when awake
• 12V units: Blue/green alternating LED when idle

How to Pair a TankMaster (In-App Pairing)

1. Open the TankMaster app
2. Select the tank you want to pair
3. Tap the option to pair the tank to a TankMaster
4. A list of nearby TankMaster units will appear
5. Select the device that matches the TM-XXXX name on your unit

Once paired, the app will remember the TankMaster and reconnect automatically
when it is within range.

If No Devices Appear

• Confirm Bluetooth permission is enabled for the app
• Move closer to the TankMaster
• Wait for the unit to wake up (battery units)
• Verify the blue LED flashes periodically

Battery-Powered Units (Important)

Battery-powered TankMasters sleep to conserve power.
They only advertise Bluetooth when awake.

• You may need to try pairing more than once
• Wait for the blue LED to flash before retrying
• Patience helps 🙂

Re-Pairing a TankMaster

If pairing worked previously but no longer connects:

1. Power-cycle the TankMaster
2. Open the TankMaster app
3. Select the tank again
4. Repeat the in-app pairing steps

Re-pairing is performed in the app, not in phone Bluetooth settings.

What Pairing Issues Are Not

• Not related to sensor mounting
• Not related to tank contents
• Rarely caused by firmware issues

Tips for Best Results

• Pair one TankMaster at a time
• Use the printed TM-XXXX name to identify devices
• Stay close during pairing

Related Articles

• Power & Reboot Behavior
• LED Status Meanings
• Mounting the TankMaster Sending Unit