2.3 Using Batteries
The recorder operates on either four “D” size batteries or on ac power. 110Vac
and 220Vac adaptors are available.
In the event of ac power failure, the unit will switch over to
battery power automatically.
Keep a fresh set of batteries in the unit in case of power
outage, when it will be especially important to have a record
of ambient temperature and humidity.
2.3.1 Installing Batteries
You may power the recorder with four “D” size batteries. For adequate
performance and battery life, use alkaline batteries. The recorder operates full
time on battery power alone for up to one month when using fresh alkaline
batteries. When replacing batteries, we recommend that you use Duracell
MN1300 “D” size batteries for long life and for best performance at low
temperatures.
To install the batteries (refer to Figure 2-5):
Figure 2-5. Battery Compartment and Battery Orientation
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