2-21-070 Audible: Sounders & horns Telephone Initiated Alarm Sounder 130.0mm [5.12 in.] ∅7.0mm [∅0.28 in.] The line powered A105NSONTEL has a choice of three alarm tone frequencies. The A105NSONTEL is a compact, high output, 105dB(A) telephone initiated alarm sounder. • Continuously rated. • Stainless steel xings. • Unit can be mounted using external lugs or internal BESA compatible xing positions. • Tropicalisation available on request. Siren Tone Nominal output: Alternating tone Sweeping tone Volume control: Effective range: Direct power from telephone line (REN 1) Ingress protection: Housing material: • GOST-R approved. Cert: POCC GB-JB05-H00144 Cable entries: 3 x M20 clearance gland knockouts Operating temp: Storage tempe: Relative humidity: Part codes: Version: A105NSONTEL[x] [x] = Housing colour: