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The tuning method 2 need 2 persons or 1 person with mirror. I cannot see the tuning light during the tuning (operation distance 6 feet).
Tuning method 2 does require more than one person, but you can temporarily turn the receiver round so the LED is in view.
For more details, please check the link:
https://www.spooky2.com/forums/viewtopic.php?f=117&t=9869