The system achieves multi-channel temperature signal acquisition and control. Temperature limit is set by keyboard. The buzzer and relay are controlled by MCU.
Check actual operation value of the relay according to set value.
按设计的整定值，检验继电器实际动作值。
3
A set of relay protocols are designed to make the system have relay function, which spread the work range of concentrator and reduce the costs of installation and maintenance.