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Τhe BS-521 is an autonomous siren for fire detection systems that gives a strong sound output and an optical warning (only sound for BS-520). They have rechargeable Ni-Cd batteries so they are activated in the case of the main's interruption which can be caused by a fire.They can be connected with one or more break glass call points (model BS -536). By pressing the glass of the call point the siren is activated.The strong sound and the optical warning beacon covers many square meters.
| INCLUDED | ΜΠΑΤΑΡΙΑ ΓΙΑ ΔΙΑΚΟΠΗ ΡΕΥΜΑΤΟΣ |
| ΚΑΤΑΝΑΛΩΣΗ (Watt) | 30mA AC |
| FUNCTION VOLTAGE | 230V AC |
| AREA COVERAGE (m2) | 6 ΜΕΤΡΑ ΠΕΡΙΜΕΤΡΙΚΑ |
| TYPE | Siren With Beacon |
| SOUND POWER(Db) | 94dB (sound effect 1) |
| DIMENSION | 141 x 141 x 100 mm |
| AUTONOMY | Yes |
| CONNECTION WITH BOARD | Yes |
| AUTONOMIC | No |
| CONSTRUCTION MATERIAL | Abs Plastic |
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