Three-in-one optical power meter red light integrated machine optical metric meter high precision mini small multi-function optical receiver optical meter 10km15 km optical fiber red light pen rechargeable light decay tester

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Color classification:: Dry cell optical power meter (-70 ~ +6) + 2mw red light 5 km + network line test Dry battery optical power meter (-50 ~ +26) + 2mw red light 5 km + network line test Rechargeable lithium electric optical power (-70 ~ +6) + 10mw red light 10 km + network cable test Rechargeable lithium electric optical power (-50 ~ +26) + 10mw red light 10 km + network line test Dry battery optical power meter (-70 ~ +6) without red light Dry battery optical power meter (-50 ~ +26) does not have red light Rechargeable lithium battery optical power meter (-70 ~ +6) without red light Charging lithium battery optical power meter (-50 ~ +26) without red light Dry battery optical power meter (-70 ~ +6) without red light + network cable test Dry battery optical power meter (-50 ~ +26) without red light + network cable test Charging lithium electric optical power meter (-70 ~ +6) without red light + network line test Charging lithium battery optical power meter (-50 ~ +26) without red light + network line test Pen type red light pen 10mw pen type red light pen 20mw