Technical Specifications - BFT SOS Manuel D'installation Et D'utilisation

Dipswitch 4: This switch allows you to keep the gate open for a preset time other than the factory settings of "normal", "15
minutes", and "latch open." When this switch is set to +5S, each press of the reset button will add an additional 5
seconds the gate will remain open. When the switch is set to +5M, each press of the reset button will add an addi-
tional 5 minutes the gate will remain open. Note: For dipswitch #4 settings to take effect, make sure dipswitch #2 is
in the RLS position and dipswitch #3 is in the 15M position.
Dipswitch 5: When this switch is in the OFF position, pressing the reset button will not change any of the time settings for
leaving the gate open. When this switch is in the PGM position, it is in program mode and every push of the reset
button will add 5 seconds or 5 minutes (depending on dipswitch 4's setting) to the time the gate remains open up
to a maximum of 120 minutes.
5. ADJUSTING SENSITIVITY
Sensitivity of the SOS detector in recognising sirens can be adjusted with the "sensitivity" trimmer.
The standard trimmer setting done in the factory is at half stroke which is quite enough in the majority of cases.
However, in installations where the SOS detector is installed a long way from the automatism or there is a great deal of acoustic
pollution, we suggest adjusting sensitivity with some real tests with sirens.
6. OPERATION
When turning the power on, the amber coloured LED fl ashes slowly meaning that the SOS detector is in the standby status.
The light of the amber coloured LED becomes fi xed when the intensity of the sound received by the SOS detector is higher than
the threshold set with the "sensitivity" trimmer; after this it analyses the tone of the sound to see whether or not it is a siren.
When the SOS detector identifi es the sound of a siren, the relay switches, supplying a closed contact; the amber coloured LED
turns off and the green LED turns on.
7. MAINTENANCE
Periodically check that the SOS detector is working properly as it provides a very important service, allowing emergency vehicles
quick access.
The SOS detector is not, however, a safety device, by which we mean it is not the only device a system has for evacuating areas
in an emergency. In fact, it must always been installed in conjunction with safety devices certifi ed in accordance with the applicable
standards.

8. TECHNICAL SPECIFICATIONS

SOS
Supply voltage: 9 ÷ 30V AC/DC
Input in stand-by: 80mA
Relay contacts: N.O. 0.5A max
Detection system: by means of microphone capsule
Reception frequency: from 1Khz to 6.5Khz
Protection level: IP 54
Dimensions in mm: 80w x 120h x 60d
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EN