Public warning system MS-20D 20W Weight 4.0Kg Dimensions: Dia.310 x L351mm Metal horn Screws made of stainless steel with thermal fuse
MS-20D 20W Public Warning System Horn Speaker – Heavy-Duty Industrial & Outdoor Alarm
The MS-20D 20W Public Warning System Horn Speaker is a high-performance industrial-grade alert solution designed to deliver powerful, clear, and reliable sound across wide areas. Built for demanding environments such as factories, warehouses, construction sites, ports, and outdoor public safety zones, the MS-20D combines strong audio output, durable metal horn construction, corrosion-resistant stainless steel screws, and a built-in thermal fuse for long-term reliability and safety.
With a 20W output, robust 4.0 kg build, and metal horn design, this speaker is ideal for emergency alerts, operational announcements, and safety communications in noisy, industrial, or outdoor environments. Its dimensions (Dia.310 × L351 mm) ensure a wide sound coverage area, making it suitable for both indoor and outdoor installations.
Why Choose the MS-20D Public Warning System?
1. Powerful 20W Audio Output
The MS-20D horn speaker delivers 20 watts of strong, focused sound, capable of reaching workers, staff, or the public even in noisy industrial or outdoor conditions. The horn design concentrates audio waves, providing directional sound coverage for:
- Factories and industrial plants
- Construction sites
- Warehouses and logistics centers
- Ports, harbors, and marine environments
- Public safety alert systems
This ensures that emergency alerts, fire warnings, evacuation notices, and operational messages are clearly heard across large areas.
Public warning system MS-20D 20W Weight 4.0Kg Dimensions: Dia.310 x L351mm Metal horn Screws made of stainless steel with thermal fuse
2. Heavy-Duty Metal Horn Construction
The MS-20D features a durable metal horn, providing:
- Excellent sound projection and clarity over long distances
- Robust performance in harsh environments
- Resistance to cracking or degradation under heavy use
Combined with stainless steel screws, this speaker is built to withstand weather, vibration, and industrial wear while remaining securely mounted.
3. Built-In Thermal Fuse for Safety
A key safety feature of the MS-20D is its integrated thermal fuse, which:
- Prevents speaker damage due to overheating
- Enhances long-term reliability
- Ensures safe operation even during continuous or high-intensity use
This makes the MS-20D ideal for critical industrial applications and emergency alert systems.
4. Industrial-Grade Applications
The MS-20D is versatile and suitable for multiple environments:
Industrial Factories & Warehouses
- Emergency alerts and operational announcements
- Shift change notifications and safety warnings
Construction Sites
- Hazard alerts and worker communications
- Loud-environment emergency notifications
Marine & Coastal Facilities
- Ports, shipyards, offshore platforms, and marinas
- Corrosion-resistant stainless steel hardware protects against salty air
Public Safety Systems
- Schools, campuses, parks, and open-air event areas
- Fire, security, and disaster alert systems
Public warning system MS-20D 20W Weight 4.0Kg Dimensions: Dia.310 x L351mm Metal horn Screws made of stainless steel with thermal fuse
5. Compact Yet Durable
Despite its powerful 20W output, the MS-20D is designed for ease of installation:
- Weight: 4.0 kg
- Dimensions: Dia.310 × L351 mm
- Mounting hardware: Stainless steel screws for corrosion resistance
The metal horn ensures long-term durability, while the weight and size allow for secure mounting on walls, poles, or industrial frames.
6. Common Issues & Troubleshooting
Even with industrial-grade construction, occasional issues may occur:
No Sound or Weak Output
- Cause: Loose wiring or incorrect polarity
- Fix: Check connections, ensure amplifier matches 20W rating, adjust volume
Distorted Sound
- Cause: Overload or damaged internal components
- Fix: Reduce amplifier output, inspect horn, replace damaged parts
Environmental Damage
- Cause: Water or corrosion in outdoor/marine use
- Fix: Mount under protection, use weatherproof wiring, inspect regularly
Volume Control Issues
- Cause: Stuck or faulty volume knob
- Fix: Turn knob gently, inspect wiring, replace if necessary
Public warning system MS-20D 20W Weight 4.0Kg Dimensions: Dia.310 x L351mm Metal horn Screws made of stainless steel with thermal fuse
7. Installation & Configuration
Step-by-Step Guide:
- Select Mounting Location: High, clear line-of-sight for maximum coverage
- Mount the Horn Speaker: Use stainless steel screws; angle horn toward coverage area
- Connect Wiring: Positive and negative terminals to compatible amplifier or PA system
- Adjust Volume: Start low, test audibility, adjust gradually
- Multiple Speakers: Wire according to amplifier specifications; assign zones if applicable
- Testing: Broadcast a test alert and ensure coverage
Tip: For outdoor or marine installations, use weatherproof conduits and stainless steel mounting hardware.
8. Warranty & Reliability
The MS-20D is backed by a limited manufacturer warranty, generally covering 1–3 years for defects in materials and workmanship.
Warranty covers:
- Defects in horn, screws, or internal components
- Manufacturing or assembly issues
Warranty does not cover:
- Misuse, abuse, or improper installation
- Corrosion from neglect or environmental exposure
- Normal wear and tear or external damage
For warranty service or support, contact Choicecycle (SGCCTV Singapore).
9. Who Will Buy the MS-20D?
- Industrial Safety Officers: Factories, warehouses, and production floors
- Construction Site Supervisors: Loud outdoor work areas needing alerts
- Marine Facility Managers: Ports, docks, offshore platforms
- Public Safety Authorities: Schools, campuses, parks, and disaster alert systems
- Facility Managers: Large outdoor spaces requiring emergency or operational announcements
10. Marine & Outdoor Benefits
- Metal horn for long-range audio projection
- Stainless steel screws for corrosion resistance
- Thermal fuse for safe, continuous operation
- Durable construction for harsh environments including marine, industrial, and outdoor facilities
Public warning system MS-20D 20W Weight 4.0Kg Dimensions: Dia.310 x L351mm Metal horn Screws made of stainless steel with thermal fuse
Technical Specifications
| Specification | Details |
|---|---|
| Model | MS-20D |
| Type | Public Warning Horn Speaker |
| Power Output | 20W |
| Weight | 4.0 kg |
| Horn Material | Metal |
| Hardware | Stainless steel screws |
| Protection | Thermal fuse |
| Dimensions | Dia.310 × L351 mm |
| Application | Public warning, industrial, emergency, PA system |
MS‑20D 20W Horn Speaker Installation & Configuration Guide
1. Tools & Materials Needed
- MS‑20D 20W Horn Speaker
- Compatible 20W amplifier or public warning system
- Mounting bracket and stainless steel screws (included with speaker)
- Screwdriver, drill, and basic hand tools
- Electrical wire (recommended 1–2 mm² for 20W load)
2. Choose the Location
- Select a high and open location for maximum sound coverage.
- Outdoor/marine use: avoid direct water exposure; still ensure the horn is angled for optimal projection.
- Indoor use: mount on walls or poles where announcements or alarms need to be heard clearly.
- Ensure the speaker is not obstructed by walls, equipment, or other obstacles.
3. Mount the Horn Speaker
- Position the speaker using the bracket or pre-drilled holes.
- Use the stainless steel screws provided to secure it to the wall, pole, or frame.
- Tighten screws securely so the speaker does not move or vibrate.
- Adjust the angle of the horn to point toward the area that requires sound coverage.
Public warning system MS-20D 20W Weight 4.0Kg Dimensions: Dia.310 x L351mm Metal horn Screws made of stainless steel with thermal fuse
4. Connect the Wiring
- Identify the + (positive) and – (negative) terminals on the MS‑20D.
- Connect these to the corresponding terminals on your PA amplifier or public warning system.
- For long cable runs, use the recommended wire gauge to avoid voltage drop.
- Ensure all connections are secure and insulated for outdoor or marine use.
5. Adjust Volume
- The MS‑20D has a built-in volume control:
- Start with the volume at a low level.
- Broadcast a test alert.
- Walk around the coverage area to ensure sound is audible and clear.
- Gradually adjust the volume to reach optimal levels without distortion.
6. Multi-Speaker or Zone System
- If connecting multiple speakers:
- Wire them in parallel or series according to amplifier specifications.
- Do not exceed the total amplifier output capacity.
- Assign zones if your PA system supports multi-zone alerts.
7. Testing
- Turn on the amplifier or PA system.
- Broadcast a test alert or pre-recorded message.
- Walk the area to ensure the sound reaches all critical zones.
- Adjust the angle, mounting, or volume as necessary.
8. Installation Tips
- Always turn off the amplifier before wiring.
- Use weatherproof conduits for outdoor or marine installations.
- Avoid mounting directly on surfaces that vibrate strongly, which can cause distortion.
- For marine environments, check that all screws and mounting hardware are stainless steel to prevent corrosion.
- Schedule regular inspections (every 6–12 months) for corrosion, dirt, and loose connections.
Public warning system MS-20D 20W Weight 4.0Kg Dimensions: Dia.310 x L351mm Metal horn Screws made of stainless steel with thermal fuse
9. DIY vs Professional Installation
- DIY: Suitable for single-unit installation in small factories, warehouses, or outdoor sites.
- Professional Installer Recommended:
- Multi-unit, multi-zone PA systems
- Marine or coastal facilities
- Integration with emergency or public safety alert systems
MS‑20D 20W Horn Speaker – Installation & Configuration Guide
1. Prepare the Tools and Materials
You’ll need:
- MS‑20D 20W Horn Speaker
- Compatible PA amplifier or public warning system (20W output)
- Mounting bracket (usually included)
- Stainless steel screws (included)
- Screwdriver, drill, and basic hand tools
- Electrical wire (1–2 mm² recommended for 20W load)
- Optional: weatherproof conduit for outdoor or marine installation
2. Select a Mounting Location
- High and open location for maximum sound coverage.
- Avoid obstructions like walls, machinery, or equipment.
- Outdoor or marine: avoid direct rain exposure and consider an angle for sound projection.
- Indoor: mount on walls or poles where announcements must be clearly heard.
3. Mount the Speaker
- Attach the mounting bracket to the wall or pole using stainless steel screws.
- Position the speaker onto the bracket.
- Tighten screws securely to prevent movement or vibration.
- Adjust the horn angle toward the intended coverage area.
Public warning system MS-20D 20W Weight 4.0Kg Dimensions: Dia.310 x L351mm Metal horn Screws made of stainless steel with thermal fuse
4. Wiring the MS‑20D
- Identify + (positive) and – (negative) terminals on the speaker.
- Connect them to the corresponding terminals on your PA amplifier.
- Ensure wires are tight and secure.
- For outdoor or marine installations, use weatherproof conduits.
5. Configure the Speaker
- The MS‑20D has a built-in volume control:
- Turn the volume knob to a low setting.
- Power on the amplifier or public warning system.
- Broadcast a test alert or announcement.
- Walk around the coverage area to ensure audibility.
- Gradually adjust the volume to reach clear sound without distortion.
- Multi-Speaker Setup:
- Wire speakers in parallel or series according to amplifier specifications.
- Make sure the amplifier’s total output matches all connected speakers.
- Use zones if your PA system supports multi-zone announcements.
6. Test and Verify
- Turn on the PA system and play a sample alert or announcement.
- Ensure all intended areas receive clear sound.
- Adjust angle, position, or volume if necessary.
- Double-check wiring and brackets for stability and safety.
7. Pro Tips
- Turn off the amplifier before connecting wires.
- For marine use: check that all screws and mounting hardware are stainless steel.
- Avoid mounting on vibrating surfaces to prevent distortion.
- Inspect connections every 6–12 months for corrosion, dirt, or loose screws.
- Use proper wire gauge for longer cable runs.
Public warning system MS-20D 20W Weight 4.0Kg Dimensions: Dia.310 x L351mm Metal horn Screws made of stainless steel with thermal fuse
8. DIY vs Professional Installation
- DIY Installation:
- Suitable for single-unit installations in warehouses, factories, or small outdoor areas.
- Professional Installer Recommended:
- Multi-unit setups or multi-zone systems
- Integration with emergency, fire, or public safety alert systems
- Marine or coastal environments
Self-Install vs Professional Installation
1. Self-Install
✅ Pros:
- Can save money if you only need one or two speakers.
- Suitable for simple indoor installations like small warehouses or factories.
- Quick setup if you are familiar with basic electrical wiring and mounting.
⚠️ Cons:
- Risk of improper wiring, which can damage the speaker or amplifier.
- May be tricky to angle the horn correctly for wide coverage.
- No warranty coverage if the speaker is damaged due to incorrect installation.
- Outdoor or marine setups are riskier without weatherproofing experience.
2. Professional Installation
✅ Pros:
- Ensures proper wiring, correct amplifier matching, and optimal placement.
- Guarantees secure mounting with stainless steel screws and corrosion protection.
- Can integrate into multi-zone or complex PA systems.
- Better for marine, coastal, or outdoor environments.
- Reduces risk of distortion, weak sound, or speaker damage.
⚠️ Cons:
- Higher upfront cost due to labor fees.
MS‑20D Warranty Details
1. Coverage Period
- Limited manufacturer warranty: typically 1–3 years, depending on supplier or purchase terms.
- Covers defects in materials and workmanship under normal use.
Public warning system MS-20D 20W Weight 4.0Kg Dimensions: Dia.310 x L351mm Metal horn Screws made of stainless steel with thermal fuse
2. What’s Covered
- Defective horn or internal components
- Malfunction caused by manufacturing or assembly issues
- Failures that occur under normal operating conditions
3. What’s Not Covered
- Damage due to improper installation or wiring
- Corrosion or environmental damage caused by neglect (e.g., marine or outdoor exposure without maintenance)
- Normal wear and tear over time
- Damage caused by electrical surges, lightning, or accidents
4. Warranty Claim Process
- Contact Choicecycle (SGCCTV Singapore) with proof of purchase.
- Describe the problem or defect.
- The manufacturer or distributor will provide repair, replacement, or warranty service instructions.
5. Key Notes
- Even with proper use, regular inspection is recommended, especially in outdoor or marine environments.
- The warranty ensures that any manufacturing defects are covered, giving peace of mind for long-term reliability.
Public warning system MS-20D 20W Weight 4.0Kg Dimensions: Dia.310 x L351mm Metal horn Screws made of stainless steel with thermal fuse
Contact for Warranty Support
SGCCTV Choicecycle
Sim Lim Square #02‑81, Singapore
WhatsApp: +65 9853 4404
Email: enquiry@choicecycle.com.sg
Website: https://sgcctv.com.sg
Operating Hours: 11:00 AM – 8:00 PM
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