Microsensor MDM4901FL Operation Manual page 9

4.2.1 4mA~20mADC(2-wire)
P/I Transmitter
P
P
Input
4.2.2 0/1V~5VDC(3-wire)
P/U Transmitter
P
P
Input
4.3 Plug connection Operation Method：
a) If the plug has been connected with transmitter, loose the central
bolt on the top of plug with little screwdriver and pull out the plug
from transmitter.
（caution：do not take out the socket on the transmitter to
protect it）
b) To disconnect the plug, please take out the central bolt on the
+V
0V/OUT
I
Fig. 7
+V
GND
I
+OUT
Fig. 8
DC current
+
U
Load
+
R
4mA
DC current
+
U
+
U
0/1V 5V
～
-
-
I
20mA
～
-
-