Gradus step row indicators are used to identify seating rows in auditoria, such as cinemas, theatres and lecture theatres, in darkened conditions. The step row indicator is supplied in three parts: a base, a frame with window and an indicator tile. The base is installed first, then the tile fits into the base and the frame is secured into place using a hex screw for security (anti-vandal & theft). The step row indicator features an 8mm base suitable for installing with carpets that have a compressed thickness of 8mm. It can be installed into the surrounding floorcovering on either the step tread or riser. The profile can incorporate alphabetical or numerical formats, or can be produced in graphic format for directional signage or to denote particular areas, e.g. wheelchair access points. The LED lighting is available in several colour options: Amber, Green, Red, Blue & White, with Yellow also available subject to minimum order quantities. The LED step row indicator is extra low voltage (12v) offering safe installation as well as use. Power consumption is low at 25mA per indicator making the system cost effective to operate.