E2S Warning Signals
Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: +44 (0)208 743 8880
Document No. D199-00-001-IS
Issue 7
13-05-22
Sheet 6 of 8
Adapters
The STEx sounder range can be supplied with the following
types of adapters:
M20 to ½” NPT
M20 to ¾” NPT
M20 to M25
It is important to note that stopping plugs cannot be fitted onto
adapters, only directly onto the M20 entries.
Any other adapters used must be suitably rated and
certified
adapters.
8) Settings
Following illustrations show the different settings available for
STExS1 Alarm Horn Sounders. See schematic diagrams
D190-06-001 for DC units and D190-06-005 for AC units.
8.1. SPL Configuration
See Table 1 for product power supply and Sound Pressure
Levels (SPL).
Configuration for DC Units
Figure 6: DC PCBA SPL Configuration.
Configuration for AC Units
Figure 7: AC PCBA SPL Configuration.
8.2. Stage Switching Polarity (DC Units)
Switching from positive switching (default) to negative
switching - DC Only.
NOTE:
Max supply is 33V DC
– if higher DC voltage is
required, use Negative switching.
Figure 8: Stage Switching Polarity.
8.3. Tone Selection
The STExS Alarm Horn Sounders have 64 different tones that
can be selected independently for the first and second stage
alarms. The tones are selected by operation of the tone setting
DIP switch 1 & DIP 2witch 2 (see figures 6 and 7) on the PCB,
for stage 1 and stage 2 respectively.
Default = S2
– Tone 1
Default = S1
– Tone 44
(ON = 1, OFF = 0)
Figure 9: DIP switch configuration
The sounder can also be switched to sound the third and fourth
stage alarm tones.
The tone table (D221-95-001-IS) shows the switch positions
for the 64 tones on first and second stages and which tones
are available for the third and fourth stages dependent on the
Stage 1 DIP switch setting.
Following table (Table 4) is a summary of the wiring options.
