Statements (23)
Predicate | Object |
---|---|
gptkbp:instanceOf |
electronic siren
|
gptkbp:controls |
gptkb:radio_station
wired |
gptkbp:feature |
modular design
directional sound multiple tone options voice capability |
https://www.w3.org/2000/01/rdf-schema#label |
Modulator siren
|
gptkbp:introduced |
1990s
|
gptkbp:location |
gptkb:Australia
gptkb:Canada gptkb:Japan gptkb:United_States |
gptkbp:manufacturer |
gptkb:Federal_Signal_Corporation
|
gptkbp:powerSource |
AC power
battery backup |
gptkbp:technology |
electronic siren
|
gptkbp:usedFor |
state of emergency
civil defense tornado warning outdoor warning |
gptkbp:bfsParent |
gptkb:Federal_Signal_Corporation
|
gptkbp:bfsLayer |
6
|