If multiple F21-4SB remote controllers are used in the workshop, how can they not interfere with each other?

I would like to know how to use a few remote controls at the same time in the workshop. How do you not interfere with each other?

Such as driving (crane, crane) remote control, some workshops more than a dozen units, a remote control remote control can completely cover all the traffic, why they do not interfere with each other at the same time?

I think the frequency should be different by replacing the internal crystal, but I want to know the exact answer.

Answer: The code is just the address code of the remote controller. The more bits the address code has, the lower the probability of error occurs. If you need to use more than one station in the same workshop, just avoid the frequency between different remote controllers. I would like to know how to use a few remote controls at the same time in the workshop. How do you not interfere with each other?

Such as driving (crane, crane) remote control, some workshops more than a dozen units, a remote control remote control can completely cover all the traffic, why they do not interfere with each other at the same time?

I think the frequency should be different by replacing the internal crystal, but I want to know the exact answer.

Answer: The code is just the address code of the remote controller. The more bits the address code has, the lower the probability of error occurs. If you need to use more than one station in the same workshop, just avoid the frequency between different remote controllers.

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