... ,m 19/63 Field of view,deg 18 Focus range,m 1.5 to infinity Exit pupil diameter,mm ... (one) for RG-55Battery life IR on,hour Up to 20 Battery life IR off,hour Up to 60 Overall ... dimensions,L×H×W,mm/in 183×81×61 Weight,g 530 Effective DistanceDetection range ... ,m 200/150 IR power,mw 25≤IR wavelength,nm 850IR effective distance,m ...