Planet IPOE-270 - Grounding the Device

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3.4 Grounding the Device
Users MUST complete grounding wired with the device; otherwise, a sudden
lightning could cause fatal damage to the device.
V1+
V2+
PWR1
PWR2
DC Input:
12-54V
, 4A max.
1 2 3 4
Earth Ground
EMD (Lightning) DAMAGE IS NOT COVERED UNDER WARRANTY.