Canon ZR45 MC Instruction Manual page 51

If your wireless controller isn't working:
Make sure the camcorder and the wireless controller are both set to the same
mode. Check the mode the camcorder is set to by pushing any button other than
the REMOTE SET button on the wireless controller. The camcorder' s mode
appears in purple for about 4 seconds. Set the wireless controller' s mode
accordingly by pressing the aforementioned button combinations. If the wireless
controller still doesn' t work, change the batteries.
Notes:
• The mode the camcorder is set to also appears for 4 seconds when you turn the
power on.
• When you replace the batteries, the wireless controller returns to mode 1.
Change the mode again if necessary.
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