As usual, one ring is for power ON-OFF and the other for backlight ON-OFF
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| 3 display unit. Electronic from Mark Munroe | |
| Left side Lumberg plug for cable connection | right side we placed a 1/2"
plug instead of the 3/8" plug to have enough space to adjust all three
displays with a small screw driver.
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As usual, one ring is for power ON-OFF and the other for backlight ON-OFF |
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