The STMicroelectronics VFR1105W-RR is a wireless, Ethernet-based automotive relay module. It features an Ethernet port, two digital inputs and two relay outputs. It is designed to allow efficient control of a car's ignition, cooling fan, headlights, and wipers, providing more secure and reliable control of vehicle systems. It is powered by a 12V DC power source, and supports an operating temperature range of -40°C to 85°C. The VFR1105W-RR also comes with several safety features, including integrated protection against shorts and open loads, as well as surge and reverse polarity protection. It is also RoHS compliant.