Designed specifically for low-voltage systems, the Lumière Cambria 203 LED allows halogen and LED fixtures to be integrated on the same 12-volt circuit. Its maker, Cooper Lighting, says the MR16-style module uses a thermal feedback control circuit that monitors its own temperatures and modifies operation to optimize performance. The landscape fixture is made from corrosion-resistant aluminum or solid brass, bronze, copper, or stainless steel with a painted or unpainted finish. Cooper Lighting, 770.486.4800;