BCY2-100IOV2M with Current Sensors ROHS is an integrated LED control device manufactured by BYD. It is used for controlling the current flow from the battery to an LED bulb. The device uses a combination of MOSFETs and voltage regulators to ensure the current is kept at a constant level. It is designed to be energy efficient and can save up to 50% on energy bills. It has a wide operating temperature ranges from -25°C to +85°C. This is a RoHS compliant product which is lead, cadmium, mercury, and other hazardous substances free. The product is designed to protect LED from overheating, overloading, and short-circuiting.