These devices are developed for the automotive industry and other industries which use 12 V sources. The TLR.440. series contains an integrated resistor for current limiting in series with the LED chip. This allows the lamp to be driven from a 12 V source without an external current limiter. Available colors are red, soft orange, yellow, green and pure green. The luminous intensity of such an LED is measured at constant voltage of 12 V. These tinted diffused lamps provide a wide off-axis viewing angle.