Dogtra RRD - Manual (Page 13)

2) Place the release lever under the latch
roller bearing (Figure 7).
3) Turn the receiver on.
Figure 7. Setting the latch.
4) Press the transmitter's Locate button. (Duck
call sound button) It is working properly
if the receiver Locator horn emits a loud
sound. (Duck sound)
5) Press the transmitter's Launcher button.
The remote launcher is working properly
if the bird cradle pops open
(Figure 8).
Figure 8. Remote launcher released.