Raddy L7 User Manual page 7

Locate the battery door on the bottom of transmitter as show in
Figure 3.
Note: Do not install the batteries backwards. You can
permanently damage the outdoor sensors. The solar panel
does not charge the batteries, so rechargeable batteries are
not recommended.
Figure 3
Remove the battery door on the back of the sensor by
removing the set screw, as show in Figure 4.
Figure 4
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