The GPD2312L100-12V3500 with Buzzers Free Hanging RoHS manufactured by INGHAi is an electronic part that is designed to provide voltage and current to power buzzers. It is made of RoHS-compliant materials and comes with a 12 V DC, 3.5 A input. It also features over-current protection and reverse polarity protection. The device is designed to be used in a wide range of applications, including automotive, communication, HVAC, and security systems. It can also be used in consumer applications, such as coffee machines, microwave ovens, and refrigerators.