Can I pair two transmitters to one receiver?

On most models yes; it is the preferred setup when two operators need to run the same crane. The number of supported transmitters varies by model and is stated in the manual. In multi-station use, it must be defined which remote has priority.

If I order a spare transmitter, does it need pairing?

Yes. The new transmitter has to be paired to the receiver. The procedure takes a few minutes and can be done under field conditions.

What if the receiver LED does not light up during pairing?

First measure the receiver supply voltage under load. If supply is present and the LED gives no response at all, the receiver is faulty; contact technical support.

After pairing, should the crane stop immediately when the remote is switched off?

Yes. When the signal is lost, automatic stopping (passive stop) must engage, and the crane standard defines this time as 0.5–2 seconds. During commissioning this must be verified by switching the remote off and measuring it.

How to Pair a Crane Remote Transmitter and Receiver

Pairing determines which transmitter a receiver will accept commands from. Field procedure, the real causes of lost pairing, and a commissioning checklist.

Pairing is the registration procedure that determines which transmitter a receiver will accept commands from. The general sequence is: the receiver is powered up, the pairing button on it is held down, and the transmitter is switched on while it is held. The procedure is complete when the receiver LED confirms the pairing. Details vary by model; the manual supplied with the product governs.

Why is pairing necessary?

More than one remote can operate in the same area. Pairing ensures that each receiver accepts commands only from its own transmitter. This is both an operational requirement and a safety measure: the wrong remote is prevented from moving the crane. During installation, each receiver-transmitter pair must be given a unique address, and that list must be recorded.

Why is pairing lost?

Cause	Symptom	Remedy
Extended loss of supply	Remote does not work at all	Repeat the pairing
Accidental reset	Button was held down too long	Repeat the pairing
Transmitter battery dead	Works up close, does not work at distance	Battery replacement / charge
Antenna position changed	Range noticeably reduced	Move the antenna outside the panel and to a vertical position
Receiver failure	Pairing is not accepted	Technical support

A large share of what looks like lost pairing is actually a weak battery. Testing the transmitter right next to the receiver lets you make this distinction quickly: if it works up close but not at distance, the problem is not pairing but signal strength.

Commissioning checklist

Try every motion one by one without connecting a load.
Verify that each button produces the expected motion.
Test the emergency stop function with the load suspended.
Switch the remote off: motion must stop within a few seconds (passive stop).
Remove and reinsert the battery: no output may activate on its own.
Check the range from the farthest point of the site; the machine must stop when it goes out of range, and must not restart on its own when it comes back in range.

For the complete installation — addressing standards, relay output, contactor interlock, and antenna placement — see: Wireless Remote Installation: Pairing, Relay Wiring, and Safety

For product selection: Wireless Crane Remote Selection Guide

Knowledge Center