AULFA Elevator adopts advanced sensor technology to collect real-time operating data of elevators, and makes data analysis, modeling and?establishes experts database against failures through microprocessor, and then transmit the data to the surveillance center through various?transmission modes (GPRS, RS485 Ethernet, CAN bus), to achieve early warning of elevator problems and giving an alarm, trapped people?rescue, daily management, quality assessment, risk prevention, risk assessment, benchmarking system, energy-saving technology development?and other functions.