What style of indicator do you have? Click on
the Indicator that looks most like yours.
Type A Water Level Indicators
are the original style. They can be identified by the red dome over
the light bulb. Also, you cannot see a battery holder - you must remove
the front panel to gain access to the batteries.
Type B Water Level Indicators
are the current style. Type B indicators can be identified by
a clear lens over an LED light, and a battery compartment
that can be accessed from the front panel.