Illuminated Signs Halo backlit channel letter sign and Logo with mini light box (Engineering) still in production Innotech Engineering Calgary Alberta gets the Multiwerks treatment with new signage An upgraded light box with new LEDs and back lit acrylic sign panel Hanley 2030 LEDS are used to produce a soft halo lighting effect on this logo We have the experience to create a variety of illuminated signs for indoor or outdoor applications. Using the vast array of LED styles available, many different effects are possible. LEDs provide a soft halo effect to these custom made channel letters.