battery backup siren

ITEM NO: HC-BS21 BATTERY BACK UP SIREN
OPERATING VOLTAGE: DC 6-14V
CURRENT DRAW: 600mA/1200mA
OUTPUT POWER: 15W/20W
SPL: 105db/110db/value="1" tcsc="0" unitname="m" w:st="on">1m@12V
SOUND TYPE: SINGLE TONE/6-TONE
COLOR: BACK
SIZE: 58(W)*67(L)*58(H)mm

ITEM NO: HC-BS23 BATTERY BACK UP SIREN
OPERATING VOLTAGE: DC 6-14V
CURRENT DRAW: 600mA/1200mA
OUTPUT POWER: 15W/20W
SPL: 105db/115db/value="1" tcsc="0" unitname="m" w:st="on">1m@12V
SOUND TYPE: SINGLE TONE/6-TONE
COLOR: BACK
SIZE: 107(W)*79(L)*75(H)mm

ITEM NO: HC-BS33 BATTERY BACK UP SIREN
OPERATING VOLTAGE: DC 6-14V
CURRENT DRAW: 600mA/1200mA
OUTPUT POWER: 15W/20W
SPL: 105db/112db/value="1" tcsc="0" unitname="m" w:st="on">1m@12V
SOUND TYPE: SINGLE TONE/6-TONE
COLOR: BACK
SIZE: 91(W)*85(L)*91(H)mm

ITEM NO: HC-BS31 BATTERY BACK UP SIREN
OPERATING VOLTAGE: DC 6-14V
CURRENT DRAW: 600mA/1200mA
OUTPUT POWER: 15W/20W
SPL: 105db/108db/value="1" tcsc="0" unitname="m" w:st="on">1m@12V
SOUND TYPE: SINGLE TONE/6-TONE
COLOR: BACK
SIZE: 107(W)*79(L)*75(H)mm