Can two different remote controls on the same site trigger each other?
What prevents a clash is not the frequency being different but each transmitter-receiver pair being paired with its own identity/address code. Devices sharing the same band do not accept each other's code. However, if a large number of devices in the same band transmit simultaneously, the range and response time may drop; this is not a clash but channel occupancy.
In industrial wireless remote controls every command carries the transmitter's identity information. The receiver processes only the commands belonging to the identity taught to it and ignores the others. For this reason two different sets working on the same site do not operate each other's machine.
Within the international standard framework for wireless remote control systems, prevention of unauthorised use and unintended operation and data integrity and error detection are counted among the basic requirements; that is, unique identification for each pair is the general expectation of this field.
Physical capacity, on the other hand, is limited. When a large number of devices using the same band transmit simultaneously:
- The response time may lengthen,
- The effective range may shorten,
- Commands may need to be sent again.
The duty cycle limits defined for short range devices exist for exactly this reason; each device is prevented from occupying the band continuously.
If more than one set is working on the site, separate the receivers and the antennas from each other, give each set a clear label, and set up a colour or numbering system that prevents operators confusing which remote control belongs to which machine.
The full topic: Wireless Crane Remote Control Selection Guide