Rein Diesel Glow Plug Controller - ELR0101: Rein Diesel Glow Plug Controller - ELR0101 is a reliable and efficient glow plug controller for diesel engines. It is designed to provide optimal performance and reduce fuel consumption while also extending the life of the glow plugs. The controller features an adjustable temperature setting, an LED indicator, and a heat-resistant housing. It is easy to install and comes with detailed instructions for a quick and easy setup.