... energy saving.4, Reverse polarity protection function.5, With infrared controller (need to purchase). you can remote control the output mode ... screws and 4 nuts, almost can be suitable for all auto.8, Overtemperature automatic protection function. When environment temperature is ... availably. Parameters and other details:1, Voltage: DC9V-14V.2, Power: 6Wx2, total 12W/pair.3, Lifetime: over 30,000 hours ...