Acrel Co., Ltd., along with its subsidiaries, researches, develops, produces, sells, and services enterprise microgrid products and systems in China and internationally. Its offerings include smart gateways, renewable energy systems, towers and base stations, and power monitoring and protection devices such as protection relays for medium voltage applications, real-time temperature measuring devices, smart temperature and humidity controllers, programmable meters, remote terminal units, data center monitor devices, smart motor protectors, and residual current relays. The company also provides energy management systems, including din rail energy meters, DC and AC multifunction meters, wireless energy meters, multi-channel meters, and prepayment energy meters; active power filters and static var generators; medical and industrial IT isolated power systems and DC insulation monitors; power sensors such as hall sensors, current transformers, UL split-core current transformers, AC current sensors, analog signal isolators, and power transducers; system software; and battery monitoring. Additionally, it offers charging pile energy management systems, energy consumption monitoring solutions for base stations, wireless temperature monitoring systems, precision distribution monitoring solutions for IDC, smart motor control and protection, power monitoring systems, cloud platforms for power IoT, smart busway monitoring, prepayment cloud platforms, operation and maintenance cloud platforms for substations, energy management systems, energy efficiency management systems, medical isolation power supply systems, photovoltaic systems, smart lighting control systems, split core current transformers, hall sensors, prepaid solutions, WHD temperature and humidity controllers, and residual current operated relay solutions. The company was incorporated in 2003 and is headquartered in Shanghai, China.