Ensure the thermometer is secure in the dock (it should click in). Check that the batteries in the dock are in the correct +/- position. The batteries in the dock may be depleted, try changing them for 2 new AAA batteries.
Ensure the thermometer is secure in the dock (it should click in). Check that the batteries in the dock are in the correct +/- position. The batteries in the dock may be depleted, try changing them for 2 new AAA batteries.