A monitor and control system includes a server model, a number of switches, a temperature sensor mounted in the server model, a monitor and control device, and a microcontroller. The switches are connected to the resistors to control current through the resistors. The temperature sensor is mounted in the server model. The monitor and control device is connected to the server model and configured to monitor and control the server model. The microcontroller is configured to switch the switches on and off and send temperature information sensed by the temperature sensor to the monitor and control device.