LED Autolamps 12-24 Volt 3 SMD LED Rear Position Marker is a red LED rear position marker with 3 surface-mount device (SMD) LEDs, which can operate at multiple voltages and is approved by the European union's economic commission for Europe (ECE). A rear position marker is a light that is mounted on the rear of a vehicle to indicate its position to other road users. The use of LED technology makes this product more energy-efficient, longer-lasting and more reliable than traditional incandescent bulbs. The 3 SMD LEDs in this product provide a bright and even light output. The multi-volt capability means that the product can operate over a range of voltages, making it suitable for use in different types of vehicles.