... Current as main control.6.Supply the power for the sensor and the transmitter etc. auxiliary function.7 Muti- signal ... RS232 communicationIsolated auxiliary power supply ,5VDC, 12VDC, 24VDC for sensor Alarm functionUp to 4 points outputs , Out1, Out2, Out3, Out4CommunicationRS485 ... 9999Integrated Time(I) : 1-3600SDerivative Time(D) : 0-1000S Alarm mode : High, Low, Higher, Lower, Deviation High and Low ...