Bird Acoustic Repeller – MultiSound BS-20L (Multi-Bird and Seagull Special Versions)
The MultiSound BS-20L is an advanced system designed to repel birds using natural sounds (sonic). It is available in two clear variants to make your choice easier.
- Multi-Bird Version (Urbano 1 – Rev2): recommended for starlings, woodpeckers, pigeons, sparrows, blackbirds and jays.
- Seagull Special Version (Agricolo 22 – Rev2): optimized for seagulls (includes several specific calls) and also effective against crows, magpies, pigeons and woodpeckers.
It protects crops, roofs and structures in urban or rural environments without harming domestic animals. Choose the version according to the target bird species.
Bird recommendation table
| Bird to repel |
Recommended version |
| Starlings |
Multi-Bird |
| Seagulls |
Seagull Special |
| Sparrows |
Multi-Bird |
| Blackbirds |
Multi-Bird |
| Pigeons |
Both (preferably Multi-Bird in urban areas) |
| Woodpeckers |
Both |
| Jays |
Multi-Bird |
| Crows and Magpies |
Both (better Seagull Special in agricultural or coastal areas) |
Important note about sparrows, blackbirds and pigeons
Sparrows, blackbirds and pigeons are particularly persistent species. For best results in controlling these birds, it is necessary to combine the MultiSound BS-20L acoustic repeller with a visual deterrent.
Experience shows that using both systems together creates a synergistic effect:
- The sound keeps birds in a constant state of alert.
- The visual device (such as the Falcon scarecrow, highly recommended for its effectiveness, or the Owl with moving wings) reinforces the perception of a real threat.
This combination is much more effective than using a single device, as birds are much less likely to become accustomed when both sound and visual stimuli are present.
Main features
- Smart protection: two versions adapted to specific species.
- Integrated light sensor (LDR): operation in day only, night only or 24 h modes.
- Variety of sounds: alarm calls and predators to increase effectiveness.
- Operating modes:
- Manual: select a specific call.
- Automatic: pre-configured programs ready to use.
- Custom list: create your own sequence of sounds.
- Coverage: up to 1 hectare (10,000 m²).
- Easy installation: can be mounted on trees, poles or walls.
Included calls (depending on version)
Multi-Bird Version (Urbano 1 – Rev2):
- C1 – Starling + Hawk
- C2 – Pigeon
- C3 – Woodpecker
- C4 – Seagull
- C5 – Crow + Magpie
- C6 – Sparrows + Blackbird
- C7 – Jay
- C8 – Predators
- C9 – Wild Mix
- C10 – Alarm
Seagull Special Version (Agricolo 22 – Rev2):
- C1 – Starling + Hawk
- C2 – Crow + Magpie
- C3 – Seagull
- C4 – Seagull S21
- C5 – Seagull S24
- C6 – Pigeon
- C7 – Woodpecker
- C8 – Predators
- C9 – Wild Mix
- C10 – Alarm
Pre-configured programs (depending on version)
Multi-Bird (Urbano 1 – Rev2):
- P1 – Starling + Hawk + Predators
- P2 – Crow + Magpie + Pigeon
- P3 – Pigeon + Predators
- P4 – Woodpecker + Alarm
- P5 – Seagull + Alarm
- P6 – Crow + Magpie + Wild Mix
- P7 – Predators + Sparrows + Blackbird
- P8 – Jay + Alarm
- P9 – Alarm + Predators + Wild Mix
Seagull Special (Agricolo 22 – Rev2):
- P1 – Starling/Hawk + Alarm
- P2 – Crow + Magpie + Pigeon
- P3 – Seagull + Predators
- P4 – Seagull S21 + Wild Mix
- P5 – Seagull S21 + S24
- P6 – Pigeon + Predators
- P7 – Woodpecker + Predators
- P8 – Wild Mix + Alarm
- P9 – Predators + Wild Mix
Package contents
- MultiSound BS-20L Acoustic Repeller (selected version)
- 12V battery clamp cable
- Protective cover
- Mounting kit
- 220V → 12V power adapter
- User manual
Technical specifications
- Internal speaker: 30 Watt
- Mono Jack 3.5 mm output: for optional external speaker (up to 30 Watt)
- Total power: 30 W / 60 W with optional external speaker (not included)
- Active speaker selection: internal or internal + external
- Work/pause times: from 10 s to 30 min
- Operating modes: day only / night only / continuous
- Random function: yes, to prevent habituation
- Light sensor (LDR): yes
- Adjustable display brightness: yes
- Volume control: yes
- Power supply: 12 V
- Power connector: DC 5.5 × 2.1 mm
- Dimensions (H × W × D): 7 × 7 × 4.5 cm
- Weight: 265 g
- Made in the European Union