4 Parts and Controls
Alarm Port - The alarm port allows external alarm indicators to be connected to the instrument
and activated when an alarm event occurs. The port outputs 0V when inactive and 12V DC (up
to 20 mA) when active. The jack accepts a 2.5 mm two-conductor subminature plug (Switch-
craft #850). The sleeve of the plug is ground and the tip is positive.
DC Power Socket - The DC plug from the AC adapter plugs into the 12V DC power socket to
power the instrument. The jack accepts a 5.5 mm miniature power plug (Switchcraft #S760).
The outer conductor is ground and the inner conductor is positive. The instrument may draw up
to 0.5A.
Figure . Left and Right Side Panels
Back Panel
The back panel contains the stand, power switch, battery compartment, and product informa-
tion, including serial number.
Stand - The stand can be used to prop up the thermo-hygrometer on a flat surface.
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