High Decibel Industrial Square Bracket Hand Alarm Switch Durable and Visible Switch for Emergency Situations

• Customization: Available
• Type: Industry Alarm
• Application: Indoor, Outdoor
• Model NO.: LK-200B
• Province: Zhejinag
• Trademark: SNTOOM
• Origin: China
• Production Capacity: 500000

Product Description

 

Technical Specifications

Parameter	Specification
Model Number	LK-200B
Alarm Type	Mechanical Rotary Siren
Operation	Manual Hand-Crank
Sound Level	125±2dB(A) @ 1m
Frequency	600±20Hz (speed-dependent)
Dimensions	450×370×580mm (Packaged)
Material	Reinforced Steel with Anti-Corrosion Coating
Weight	12.5kg
Rotation Speed	60-120 RPM (optimal)

 

Key Features

 Extreme 125dB Output - Audible over 1km in open areas
 Military-Grade Construction - Withstands harsh environments
 No Power Requirements - Fully mechanical operation
 Adjustable Sound Pitch - Varies with cranking speed (500-700Hz range)
 All-Weather Design - Rust-proof coating and sealed gearbox

 

Performance Data

Cranking Speed	Sound Output	Frequency Range
60 RPM	115dB	550-650Hz
90 RPM	122dB	580-680Hz
120 RPM	125dB	600-700Hz

 

Application Matrix

Industry	Critical Use Cases
Military	Battlefield communications
Civil Defense	Disaster warning systems
Corrections	Prison emergency alerts
Mining	Underground evacuation signals
Energy	Oil depot safety warnings
Aviation	Remote airstrip emergencies

 

Mechanical Advantage

1. Gearbox System - 8:1 torque multiplication

2. Dual Bearing - Supports 10,000+ RPM rotor speed

3. Aerodynamic Design - Optimized air compression

4. Fail-Safe - No electrical components to malfunction

 

Why Choose LK-200B?

→ Unmatched Reliability - Works in EMP/blackout conditions
→ Tactical Volume - Louder than most electric sirens
→ DHS-Approved - Meets civil defense standards
→ Minimal Maintenance - Annual lubrication only

Package Includes:
1× LK-200B Alarm Unit
1× Quick-Mount Tripod Base
2× Replacement Drive Belts
1× Maintenance Toolkit

Deployment Options:
• Wall-mounted (bracket included)
• Tripod-mounted (for mobile use)
• Vehicle-mounted (custom kit available)

Warning: Requires hearing protection when testing. Not for use within 50m of unprotected personnel.

Certifications:
• MIL-STD-810G compliant
• IP54 weather resistance
• DHS Approved for civil defense