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so that the communication efficiency is doubled and frequency resources are saved
The dark current of 294 is a little bit higher than 1600 from out test result
Correct back focus is critical for achieving sharp stars and optimal field correction
95% transmission at 496nm and 501nm (O-III)
Retekess Two Way Tour Guide System For Factory Training Svbony so that the communication efficiencyRetekess Two Way Tour Guide System For Factory Training Retekess Two way communication device has 23 channels, you can use many main transmitters in one location. So if you have many groups, that will work. In addition, one main transmitter can work with as many as receivers in one group. All the people can talk in the group when they need to talk. Strong obstacle diffraction ability, first class penetration effect of cement walls and brick walls, it
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