Teho-Ulvo D Siren Series
Teho-Ulvo series contains electronic outdoor warning sirens, created by the Finnish company Elektro-Arola Oy in 1991. The alarms from the high-power speakers are achieved using a computer-optimized program. Teho-Ulvo D consists of two parts: central unit with control and amplifier electronics and horn speaker set normally installed with a mast pipe.
Models
| Model | Image | Speakers |
|---|---|---|
| D600 | 6-8 | |
| D1200 | 12-16 | |
| D1800 | 18-24 | |
| D2400 | 24 or 32 |