Red Light Source Fiber Pen Tool 20mW

The red light pen is the most widely used in telecom network and network cabling project, which has the largest power, signal intensity, and sufficient power. Universal interface ST SC FC, the only regret is that the 1.5LC interface can not be applied, the need to convert the line or the head to test. Currently there are a lot of businesses are deliberately put 5mW said to be 5 km transmission, in fact, mW is the unit of light power. This shop here in a wordy few words: Amoy friends remind attention. The shop's red light pen baby, all in the baby Title marked with light transmission kilometers (reference value) and optical power (mW). Not to say how much power can be transmitted far away. Like 5mW is 5 km, in fact, can be transferred to 5-8 km. 10mW can be transferred to 10-12 km.  and 20mW can be transferred to 20 km. 

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