I bought this Heupar Box-1R for outdoor use despite reading the reviews because most people don't understand that you need to add a Heupar laser receiver to use this level outdoors. Basically, since it's too bright outside, you have to rely on the beep of the receiver to know where the laser beam is pointing. Raise or lower the handset until you hear a beep. The laser and receiver work properly. together up to 100 feet for me. I didn't go beyond that, but should be good to 150 feet with a receiver.
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