Aluminum Hand-Crank Operated Emergency Alarm Siren Manual Alarm Loud110db

Description

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Aluminum Hand-Crank Operated Emergency Alarm Siren Manual Alarm Loud110db
Description:
It does not need any outside power source. It an effective range of one mile. Ideal for getting people's attention, or alerting workers for lunch time, and also good for many other uses. Durable and easy to used.
Specification:
Color: Red
Type: Manual hand lever operated
Sound Rating: 110±2 dB(A) @1M
Output Frequency: 550±20Hz
Weight: 1.3kg