SD250 (250 watt Amplifier)

Order Code SD250

Amplifier with separate Tone Generator SD-TG with on-board SD Card containing a library of messages & tones, 3 amp strobe output, 2 x audio mic/line inputs, inputs for ALERT and EVACUATE tones with 4 additional inputs for custom tones/messages.


Product Description

The EVACTRON SD series amplifier units are a new range of Building Occupant Warning System (BOWS) which provide Automatic and Manual control of Alert and Evacuation tones.

Features include
Amplifier with separate Tone Generator including on board SD Card with message and tone library. You can also load your own.
4 x Auxiliary inputs, to trigger custom SD tones/messages.
Test and False Alarm messages push buttons on board.
Selectable Common Fault output contacts N.O. or N.C .
Selectable Evacuation Tone, ISO T3-default or EVAC 2220 via DIP switch.
Test Tone for speaker output 100V calibration via DIP switch.
Monitored Strobe Output, up to 3amps to directly drive strobes.
1V audio output – RCA connection to drive slave amplifiers.
Local Alarm input with ALERT to EVAC change-over timer 0-8 minute.
Microphone input M1 also with 1V output to loop mic (no transformers needed)
AUX audio input M2. 3.5mm connection for testing speakers with IPOD etc
Monitored 100v speaker output with open and short protection.
LMU4 compatible. EVACTRON LMU4 cards can be used for multiple speaker circuits.
SRB1 compatible. EVACTRON SRB1 cards can be used for multiple strobe circuits.
Plug-in terminal connectors for easy upgrades and powering down.
250 amplifier supplied on powder coated base plate with SDTG separate (connecting cables included)


Wattage 250 watt
Voltage 24vdc
Current 17A FL 480mA stand-by
SD250 300L x 240D x 90mmH (amplifier)
200L x 115D x 40mmH (tone generator)
Weight 9kg
Available models:

Additional information

Weight 3 kg
Dimensions 221 × 114 × 90 cm