Portable Manual Siren Super Loud Aluminum Alloy for forest Fire Prevention Water Conservancy and Flood Control Alarm Easy to Install

Features:
Hand alarm is a kind of hand-operated sounder without power supply support. It is called differently due to local differences (hand alarm, manual alarm, manual alarm, portable alarm, no power alarm, shaking speed device).
The manual alarm provides power and sends out alarm signal by shaking the handle. The sound size depends on the shaking speed of the handle. The shutter mechanism of baffle is set in the sound window to select the sound strength and strength signal. The sound window is quickly closed to block the sound and generate different signals.
The handle is connected with the driving shaft of the gear increasing mechanism, the output shaft of the gear increasing mechanism is connected with the clutch slider through a pin, and the clutch slide block is connected with the flange friction transmission of the impeller. Its purpose is to provide power through shaking the handle to send out alarm signal without power supply support. The sound level depends on the hand rolling speed.
Scope of application: for water conservancy and flood control, reservoir, civil defense, army, fire control, prison, mine, gas station and other special post institutions.

Specification:
Color: Red
Sound level: 110 ± 2 (a) at 1 m radius
Output rating: 500 ± 20
Material:Iron + copper
Product Dimensions:6.9 x 6.4 x 5.8 inches
Package size:17*17*17cm
Package weight:1200g

Package List:
1 * Siren