Features:
1) Voltage: DC 6 - 12V
2) Output power: 10W, 15W, 20W
3) Colors: black, grey
4) Switch: round or flat key lock
5) Sound types: single tone, 6 tones
6) Size (W x L x H): 58 x 66 x 58mm
7) Used in car alarm system, the sirens are connected with sensors
8) Can work like other sirens. When thieves cut off its wire, it can make sound
automatically, due to the backup batteries installed, they are of good quality
and low price