Abstract: A power controller based on Arduino Uno is developed to solve the communication failure problems caused by software and other reasons of unattended station instruments. Its main feature is to install the controller between the unattended station's instrument and the power supply battery, and connect the controller to the network. In the remote computer installation management terminal of the same network segment, and keep it open, the monitoring function can be implemented without interruption, and the operation state of the instrument can be judged in real time according to the needs of the implementation of multi-controller management functions. The actual test results show that the equipment is running well.