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MX4428 MXP Engineering / Technical Manual Document: LT0273
Device Information and Programming
Page 3-30 24 March 2006 Issue 1.5
3.14 814SB SOUNDER BASE
3.14.1 GENERAL
The 814SB detector base is designed as a low cost warning device. One of three different
tones may be selected (none of which are AS2220 compliant), and three sound levels are
selectable. Note that the current taken by a sounder base is very much higher than most
other loop devices, and the number of sounder bases on a loop is limited by the available
current.
The sounder is controlled by the detector which is plugged into the base, but the operation of
the sounder can be quite separate from the operation of the detector. (Refer to section
3.3.)
The tone switch allows selection of one of three different tones –
1 - continuous tone (825Hz)
2 - fast sweep (saw tooth envelope at 15Hz)
3 - slow sweep (saw tooth envelope at 5Hz) (Factory Setting)
The volume switch provides three different levels of loudness:
1 - 70dB(A) (quiet)
2 - 80 dB(A) (medium)
3 - 90 dB(A) (loud) (Factory Setting)
The 814SB may be plugged into a MUB standard base, 5B standard base, or 5BI isolator
base, or mounted directly on the ceiling or wall.
3.14.2 SPECIFICATIONS
Line Connections L(–), L1(+)
Remote LED Connection R(–), L1(+)
Supply Voltage 20Vdc - 40Vdc
Supply Current 400uA (typical quiescent)
9mA (active in QUIET setting)
12mA (active in MEDIUM setting)
15mA (active in LOUD setting)
Dimensions 110mm (diameter) x 37mm (excluding detector)
Weight 163g
3.14.3 WIRING
Wiring is the same as the MUB, refer to Figure 3.1.