Werma signaltechnik permanent beacon steady light 210 series werma signaltechnik 21020000 the werma signaltechnik 21020000 is a green permanent beacon steady light that has been designed for base mounting the beacon produces a steady light making the operator and others aware of a specific condition or is instructed to carry out a certain course of actionthe beacon is supplied with a wide input voltage of 12 to 230v acdc it is compact in design economical reliable and ideal for