Laser Ray Box - Eisco [8985]

When the traditional white light ray boxes do not provide strong enough rays to be seen across a classroom of ambient light then we recommend this 635nm wavelength, 3/5 ray, monochromatic (laser) ray box. Comes complete with built in rechargeable batteries and a USB charging lead to allow charging from any computer, laptop or tablet or, alternatively, a mains USB plug. Class 2. Less than 1mW so approved for use in schools.