A.High current impact alarm

B.Over voltage alarm

C.Over frequency alarm

D.Current high threshold crossing alarm

E.Branch overload

A.The transmission channel between the management system and the collector adopts encrypted transmission mode

B.The management system passes the security scan of anti-virus software

C.User password is encrypted

D.Security reinforcement and vulnerability prevention for operating systems, databases, and management systems

A.Dual power supply

B.Both A and B are right

C.Single power supply

D.Other

A.ETH Converter

B.AC Actuator

C.Access Control Actuator

D.Sunroof Actuator

A.The power supply is abnormal

B.Equipment failure

C.Poor cable contact

D.Loose cable connection