Frequently Asked Question

SPD - How do I test the SPD?
Last Updated 3 years ago

We need to verify the SPD is compromised and not something else in the System.

PROCEDURE ONE
TESTING procedure for the SPD300-DC and SPD600 and SPD115
Using a simple (good) 9 volt battery.
Connect the RED WIRE to the battery POS and the BLACK WIRE to the battery NEG.
Both LEDs should light.

PROCEDURE TWO
TESTING the SPD300-AC, SPD300-AC/DC and some older version SPD115.
Connect the RED WIRE to the battery POS and the GREEN WIRE to the battery NEG.
A single BLUE LED should light.

Connect the BLACK WIRE to battery NEG and the GREEN WIRE to battery POS.
The other BLUE LED should light.

Please Wait!

Please wait... it will take a second!