Campbell Scientific PWS100 Present Weather Sensor - Manual (Page 66)

Section 7. Operation
Option 10 of the configuration menu gives the PSU SHUT DOWN VOLTAGE
menu (Figure 7-22). Enter the PSU input voltage level below which the
PWS100 will enter low power mode. Enter `0.0’ to disable this feature
(default).
FIGURE 7-22. PSU shut down voltage menu
This feature is usually used to protect batteries from deep
discharge. There is a hysteresis of 0.9V applied. For example, if
the PWS100 goes into low power mode at 10V it will return to
normal operation when the voltage rises to 10.9V. Current will
be limited to about 120 mA at 9V. Communications are still
possible and a message “PSU voltage too low nn.n”, where nn.n
is the supply voltage, will be output every 60 seconds. NOTE
7.4.4 Top Menu Option 5 (Password)
Choosing option 5 from the SETUP menu brings up the PASSWORD menu
(see Figure 7-23). Pressing enter deletes the password. To set a password, type
up to 10 alpha-numeric characters and press enter.
FIGURE 7-23. Password menu
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