Operation of the Bisun B21caving light The rotary switch in the headset containing a B21 is used to control both wide and spot beams, in a similar (though slightly more complicated) way to operation with conventional inc

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Date: 2012-10-02 11:58:54		Operation of the Bisun B21caving light The rotary switch in the headset containing a B21 is used to control both wide and spot beams, in a similar (though slightly more complicated) way to operation with conventional inc Add to Reading List Source URL: www.bisun.co.uk Download Document from Source Website File Size: 42,13 KB Share Document on Facebook