Polarity Tester for 2.5/5.5mm DC Power Connectors
Reverse polarity power can severely damage your telescope, so check
new, portable or unknown power sources before using them!
This tester has a female 2.5/5.5mm connector with a dual color LED
and is used for verifying the polarity of DC power supplies and field
power sources in the 12-18 volt range. Connect the tester to the power
source, and the LED lights green for center positive connector, red
for center negative, or yellow for AC power. Operates from about
4 to 24 volts.
For use with Meade LX200, LX200-GPS, LX90, LXD55, ETX, etc.
Price includes shipping in the USA!
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