Thermo Scientific Locator Series Operation Manual And Parts List page 20

Section 6
LN2 Level Monitor Operation
Figure 6-1. Connect to Remote Alarm
Remote Alarm wires connect here
(Note polarity.)
-
+
J3
1
1
1
J4 J6
For normally open contact, place jumper here.
For normally closed contact, place jumper here.
Figure 6-2. Jumper Location
Thermo Scientific Cryogenic Storage Vessel 6-3