Mockingbird set-up procedures....in summary, flip the battery (it puts it in set-up mode), flash an IR "message" to it from another light source (3 long, 2 short etc), flip the battery back, check it's working...unscrew it so it's not "flashing" all the time...and when you need it tighten it up and let it flash (IR) away......and then if it don't flash, it's ol' Terry.....
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