User's Manual

Receiver model: WH2642
Sensor model: WH22B
Version 1.0 Page 8
Insert 2 x AA batteries in the battery compartment, as shown in Figure 4.
Note: Do not install the batteries backwards. You can permanently damage the
thermo-hygrometer. Do not use rechargeable batteries.
Note: We recommend installing Lithium AA batteries
Lithium batteries provide longer life and operate in colder temperatures.
Figure 4
Reinsert the battery compartment into sensor array (hold upright so the batteries do not slide out), and
close the battery compartment door and tighten the set screw.
The LED on the back of the rain collector will turn on for four seconds and normally flash once every
45 seconds (the sensor transmission update period).