Radarcan DOG BARKING SILENCER PRO User Manual page 12

What is the lifespan of the DOG BARKING SILENCER PRO?
The lifespan is unlimited.
Does it need refills?
It needs no refills.
Where should the DOG BARKING SILENCER PRO placed?
Hang or place it with the front part (where the LED light
indicator is) pointing toward the area where the dog is, and
as close to that area as possible (See Fig 2 in the Instructions
for Use section).
Be sure the dog cannot reach and strike the device.
Can I plug in more than one DOG BARKING SILENCER PRO
in the same area?
Yes. The effect of the DOG BARKING SILENCER PRO will be
strengthened and be able to reach the maximum possible
surface area.
What should I do if I have more than one barking dog?
Use one DOG BARKING SILENCER PRO for each dog. If there
are more dogs, a separate device for each must be used, and
in a different training space.
Can I plug in other RADARCAN® products in the same
area?