red line laser module type : li650-2.5-3(5) main technical parameters: size : 8mm x 26mm wavelength : 650nm operating voltage : dc 3v or 5v operating current :less than50ma divergence : 1.5mrad output aperture : dia5.5mm output power : 2.5mw fan angle: 45 or 90 (please advise) line thickness: less then 3mm at 6m camber: less then 1mm optics : glass lens both sides ar coated operating distance : 6m (very important, please advise) wire length : 2 x 100mm(or connector wire and plugs) operating temperature : -10 celsius degree +40 celsius degree storage temperature : -40 celsius degree + 80 celsius degree accessories choose and buy : lps-1 power supply