1. RS485 remote communication interface (with lightning protection and isolation circuit)2. Power input lightning protection3. Multiple alarm signal output methods: a. Remote communication query b. Normally open dry node output c. LCD alarm display4, compressor working delay protection5. Power failure self-recovery function. Once power failure occurs, once the power supply is restored, various preset settings are still valid, and the controller will automatically operate according to the original set parameters;6. English LCD display panel7. Compressor pressure protection (high / low pressure)8. Alarm function
