Temperaturerelay tests temperature of motor, if it exceeds rating temperature to send a signal, contactor cut off main circuit to complete protection of motor.
温度继电器检测电动机温度，超过额定温度发出信号，接触器切断主电路，完成电机保护。
2
It has dual temperature protection, in addition to temperature control. Set another temperaturerelay to monitor heating temperature to guarantee secure and reliable working.
有双重温度保护，在控温之外，另设置一套温度继电器，监测加热温度使更安全可靠工作。
3
The system achieves multi-channel temperature signal acquisition and control. Temperature limit is set by keyboard. The buzzer and relay are controlled by MCU.