KE 4256-3230 Keatec T Series UPS 10-40K 380Vac Users Guide English 20170126 This manual is for qualified personnel only.Page 42Appendix 6 Dry contact port communication port definitionDefinition of Male port:Instruction:UPS InstructionPin1 UPS Battery LowPin2 AC Power FailurePin3 Turn off UPSPin4 Common GNDFunction description:Monitor UPS status;Monitor UPS battery status;Shutdown UPS.