1-30 Chanel Voice Fiber Optical Multiplexer
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“-48V” polarity Connect power negative polarity
“+48V” polarity Connect power positive polarity
Note:
Device has polarity protection measures. If positive and negative polarity is
connected reversely, device will not damage, function well and ease of installation and
maintenance. (The power contains DC48V, DC -48V, DC24V, DC -24V, and so on).