A compact sonic bird scarer that plays distress and predator calls and an alarm sound to move birds on. Pick a single call or one of the preset programmes, and set the volume (the maker suggests 13 to 14 to start).
The light sensor lets it run by day only, by night only, or all the time. Play time and pause time are adjustable, and a random setting varies them so birds don't get used to the pattern. Use the distress and alarm sounds in moderation for the same reason. There's a 3.5 mm socket for an extra speaker.
It runs on 12 V, from a battery with the clamp cable supplied or from a 12 V mains adapter. With a battery, use one of at least 7 Ah. The unit isn't waterproof, so fit the clear cover supplied to keep rain off. Don't mount it at ground level, and keep cables off the ground. Put the speaker about 1 m above the crop, and set it up about two weeks before birds usually become a problem.
It's loud. The maker advises checking local rules first, keeping the sound pointed away from houses, and remembering it may disturb people at night.
Specifications
Type
Sonic bird scarer
Speaker
30 W built in
Extra speaker socket
3.5 mm mono jack
Modes
Day, night or continuous (light sensor)
Play time
10 s to 20 min
Pause
Up to 30 min, with random setting
Power
12 V (battery or mains adapter)
Size
70 × 70 × 45 mm
Weight
265 g
In the box
Unit, battery cable with clamps, clear cover, mounting screws
