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Watchport/H (Humidity & Temperature Sensor)
The Watchport/H uses an ASCII command interface. Its operating range is -40C to +85C. For
best results, avoid exposure to bright light.
Command
Description
Tells about the command set available for this
?<CR>
Watchport.
Tells what kind of Watchport is connected.
I<CR>
Gives the percentage relative humidity.
H<CR>
Gives temperature in Celsius.
T<CR>
Also gives temperature in Celsius.
TC<CR>
Gives temperature in Fahrenheit.
TF<CR>
Repeats the TF command every 3-4 seconds until the
TF+<CR>
next keystroke. Appending + also works with the TC
and H commands
Adjusts the slew rate of the data line. When "L" is
L4<CR>
followed by a numeric value, 1 through 8, Watchport
responds with OK. Other values return Invalid
Command. The default setting is 4. Adjust the parameter
until the data transmission becomes error-free. The
setting remains in effect until the Watchport is power-
cycled.
Watchport Installation Guide (90000406 Rev. D) – Page 11
Watchport/H Commands
Return Value
as described in this
section
Watchport/H<CR>
38%<CR>
+22.2500C<CR>
+22.2500C<CR>
+72.0000F<CR>
+72.0000F<CR>
OK
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