Designed for safety the Unilab Solid State Laser is now very low-power (1mW) and is protected by a key switch to prevent it's unsupervised use. The power output places the laser in 'Class 2' as recommended for use in schools and colleges. No damage is likely should a stray reflection of the beam enter the eye at such low power. The wavelength of the light is 635nm which compares favourably with the helium-neon wavelength of 632.8nm. Additional features include:. Tapped (M5) exit hole for possible mounting of optical components, fibres etc. closest to the point of emergence of the beam. Laser support arm (from the laser accessories kit - B8H26151) connects to a tapped mounting point and allows the laser to be supported using an ordinary clamp stand and boss. Metal case fitted with 1.8M of mains cable, illuminated ON/OFF switch, locking key switch with 2 keys. 250mA fuse. This device is compliant to EN61010-2010 with certificates available on request. Technical Specifications:. Power Output: 1mW. Laser Class: Class 2. Wavelength: 635nm. Beam Divergence: 3mrad. Beam diameter: 6mm at 5M. Dimensions: 270mm x 110mm x 110mm approx. Weight: 1.05kg approx. A Laser Accessory Set is available for purchase separately which includes a multitude of different accessories for use with a laser (B8H26151).