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Mode 1 - Direct application of power. 12V AC or DC is applied to the unit; the sound plays for the duration of the applied power. Mode 2 - Triggered by an isolated contact. The unit is permanently powered from 12V AC or DC.
10 Σεπ 2024 · This Bell SG1 unit provides an extension of the call tone on a door entry telephone. In addition to an output of 80 dB at one metre it has 8 user selectable tones. The unit can be triggered either from a 12 Volts source or from a switch.
Trailing edge dimming. Protection. Luminaire class: Class II. IP Class: IP20. Energy and approvals. Contains light source of energy class: F.
Bell System Uk (BSTL) Spares. We can supply the full range of the Bell Systems UK (BSTL) Audio and Video Intercom Systems including handsets and door stations. Naturally we can also supply the complete range of new systems.
We design and manufacture an impressive range of audio and video door entry telephones incorporating innovative features and functions demanded by the expanding door entry systems and access control markets.
Majesty House, Avenue West Skyline 120, Great Notley Essex CM77 7AA Braintree United Kingdom
The Bell 61 is a two-way speaker unit used and comes with an individual volume control for the microphone and speaker. The 61 is used for Bell system audio panels up to 10 buttons.
