옵션 /A1  Alarm output 2 points *3
 옵션 /A2  Alarm output 4 points *3
 옵션 /A3  Alarm output 6 points *3 
 옵션 /A4  Alarm output 12 points *3*4
 옵션 /C2  RS-232 interface *5
 옵션 /C3  RS-422/485interface *5
 옵션 /F1  FAIL/Status output *4
 옵션 /M1  Mathematical functions
 옵션 /N1  Cu10, Cu25 RTD input/3 leg isolated RTD
 옵션 /N2  3 leg isolated RTD *6
 옵션 /N3  Extended input type (PR40-20, Pt50, etc.)
 옵션 /R1  Remote control
 옵션 /TPS4  24 VDC transmitter power supply (4 loops) *7
 옵션 /PM1  Pulse input (including remote control and mathematical functions) *8
 옵션 /CC1  Calibration correction function
 옵션 /MC1  External input function *9