Edwards 90 Series strobe lights have been designed to command immediate attention. The unique double fresnel lens has been optically engineered to maximize the strobe tube brilliance, causing the dome to “¿ll” with light each time the strobe ¿ashes. This design feature increases the apparent AdaptaBeacon “on-time”, improving viewer perception. Beam distance is increased through the addition of external fresnel lenses. The heavy duty, cast zinc base may also double for use as a junction box. These strobe lights have no moving parts and therefore are not subject to mechanical wear and are virtually immune to shock and vibration. The transistorized power supply and Xenon ¿ash tube ¿ashes a 360 degree beam of light of tremendous intensity through a shatter-resistant Lexan® optic lens. Lenses available in six colours: red; amber; blue; green; magenta; and clear.