ไซเรนมือหมุนสีแดง110dB.ขนาด4นิ้ว
Fixed Hand Crank Operated Air Raid Alarm Handheld Siren
Features:
Manual hand crank operated siren will produces a loud sound; it does not need any outside power source.
Ldeal for getting peoples attention or alerting workers for lunchtime and good for many other uses.
Fully capture mosquitoes strong air duct design and expand mosquito control space.
Loud sound 110±2 dB
Effective range: 500m
Material:Aluminum alloy
Color: Red
ติดต่อโทร 088 258 1380