Справочник Пользователя для Security Centres 808

496336 Issue 1

3 of 22

Operating temperature

= -10º - +40ºC.

Humidity

= 80% RH.

Dimensions (end station)

= h x w x d 300 x 300 x 80mm.

Weight (end station)

= Approximately. 5Kg.

System Power Supply
(Ambient Temp. 20 º. C)

= 900 mA.

With the system quiescent, this supply is used as follows:
808 end station

= 90 mA.

Each Remote Keypad

= 60 mA.

The remaining current is available for recharging the battery, and supply
attached devices through the 12V Aux terminals on the main connector.

With the system in alarm the battery can supply current additional to the
maximum available from the system power supply.

Self resetting thermal Polyswitches protect outputs at the following levels:

12V Aux

=1,350mA.

Keypad 12V

= 500mA.

Siren

= 750mA.

Batt (reverse connection)

= 2,500mA.

Bell, Strobe and OP1 are open collector outputs rated at 500mA.

Standby Battery

= 12 Volt, 6.5AH rechargeable lead-acid, Gel

Type battery.

Battery Space

= h x w x d 150 x 110 x 75 mm.

Recommended maximum distances for the remote keypads from the end
station, using standard alarm cable is 100 metres per branch for the star
configuration.

For a daisy chain configuration the maximum length must take account of the
number of keypads sharing the cable. In general, a single keypad can be
connected at the end of a maximum of 300m of standard cable. If you wish to
connect more keypads the cable must be shorter, or the 0V wire must be
thicker.  The criterion is that at the last keypad the voltage between 0V and
12V wires must be no less than 10.5V.

808