The CN4-BELL is a robust industrial signaling bell, engineered specifically for high-noise environments where reliable audio communication is non-negotiable. Unlike standard commercial bells that lack the power or durability for industrial use, this device is built to deliver consistent performance in harsh conditions, making it an ideal choice for factories, warehouses, and processing plants.
Model CN4-BELL
Brand EKF
Type Industrial Signaling Bell
Housing Material Cast aluminum with epoxy coating
Sound Output 100-115 dB at 1 meter (adjustable)
Tones 8 programmable tones (continuous, pulsed, chime, etc.)
Operating Temperature -30°C to 70°C (-22°F to 158°F)
Protection Rating IP66
Mounting Wall, ceiling, or pole-mountable (bracket included)
Dimensions 150 mm (diameter) x 200 mm (height)
Weight 2.8 kg
Input Voltage 24 V DC, 110 V AC, or 230 V AC (selectable)
Control Input Dry contact or voltage signal
Certifications CE, UL 1971 (signaling devices), CSA C22.2 No. 121
Connection 1/2″ NPT conduit entry
The CN4-BELL is a robust industrial signaling bell, engineered specifically for high-noise environments where reliable audio communication is non-negotiable. Unlike standard commercial bells that lack the power or durability for industrial use, this device is built to deliver consistent performance in harsh conditions, making it an ideal choice for factories, warehouses, and processing plants.
CN4-BELL
It fits seamlessly into industrial safety and automation systems, connecting to PLCs, fire alarm panels, or standalone control systems to activate pre-programmed tones based on specific events. What sets theCN4-BELL apart is its ability to produce multiple distinct tones (up to 8 programmable options), allowing facilities to assign unique sounds to different alerts—such as a continuous ring for fire emergencies, a pulsed tone for equipment faults, and a short chime for shift changes. This tone differentiation is crucial in busy environments, enabling workers to recognize the nature of an alert instantly without needing to check visual indicators. Its rugged design ensures it can withstand the rigors of industrial settings, from high vibration near heavy machinery to temperature fluctuations in unheated warehouses.
CN4-BELL
Main features and advantages:
The CN4-BELLdelivers exceptional acoustic performance with a sound output of up to 115 decibels at 1 meter—powerful enough to be heard over the din of production lines or heavy forklift traffic. Its precision-engineered bell mechanism produces clear, resonant tones that carry well across large spaces, ensuring coverage even in facilities with high ceilings or complex layouts. Unlike electronic sirens that can sound distorted at maximum volume, the CN4-BELL maintains tone clarity across its entire volume range, reducing the risk of misinterpretation.
Hardware-wise, the CN4-BELL is built for durability, with a cast aluminum housing coated in corrosion-resistant epoxy, making it suitable for both indoor and outdoor use. It features an IP66 protection rating, shielding internal components from dust, water jets, and even temporary submersion—critical for outdoor storage yards or facilities with washdown procedures. Its compact design (150 mm in diameter) allows flexible mounting on walls, ceilings, or equipment frames without occupying excessive space.
Compatibility is another key strength, as it integrates with major industrial control systems from Siemens, Allen-Bradley, and Schneider Electric via standard relay outputs or 24 V DC control signals. This flexibility allows it to be added to existing safety systems with minimal wiring changes, making it a cost-effective upgrade for improving alert visibility.
CN4-BELL
technical specifications：
Model CN4-BELL
Brand EKF
Type Industrial Signaling Bell
Housing Material Cast aluminum with epoxy coating
Sound Output 100-115 dB at 1 meter (adjustable)
Tones 8 programmable tones (continuous, pulsed, chime, etc.)
Operating Temperature -30°C to 70°C (-22°F to 158°F)
Protection Rating IP66
Mounting Wall, ceiling, or pole-mountable (bracket included)
Dimensions 150 mm (diameter) x 200 mm (height)
Weight 2.8 kg
Input Voltage 24 V DC, 110 V AC, or 230 V AC (selectable)
Control Input Dry contact or voltage signal
Certifications CE, UL 1971 (signaling devices), CSA C22.2 No. 121
Connection 1/2″ NPT conduit entry
Contact Us Phone:+86 16626708626 WeChat/WhatsApp:+86 16626708626 Email: 3772179818@qq.com
CN4-BELL
Application areas:
In the bustling environments of manufacturing plants, where the roar of machinery can drown out critical alerts, and in large warehouse facilities where workers are spread across vast areas, reliable auditory signaling systems are essential for maintaining safety and operational efficiency. These industrial spaces, along with logistics hubs and processing facilities, face the constant challenge of ensuring that important notifications—such as equipment malfunctions, fire alarms, or shift changes—are heard clearly by all personnel, regardless of background noise or distance.
This is where the CN4-BELL excels. Used in industrial automation and facility management, it functions as a high-decibel industrial signaling device, designed to cut through ambient noise and deliver distinct audio alerts that leave no room for ambiguity. In automotive assembly plants, it serves as a critical safety tool, sounding specific tones to warn workers of approaching automated guided vehicles (AGVs) or equipment startup. In warehouse distribution centers, its programmable chimes signal the completion of order picking batches, streamlining workflow coordination across different zones. The CN4-BELLis trusted because it doesn’t just make noise—it does so with the clarity, volume, and versatility required in environments where missed alerts can lead to accidents, delays, or operational disruptions. Whether integrated into new safety systems or upgrading outdated alarms, it’s a vital component that safety officers and facility managers rely on for effective communication.
CN4-BELL
Related products:
CN4-BELL-LED – Variant of the CN4-BELL with integrated LED strobe light for combined audio-visual alerts.
CN4-BELL-WS – Weatherproof version of the CN4-BELL optimized for extreme outdoor conditions.
Tone Controller TC-4 – Accessory that adds advanced tone programming capabilities to the CN4-BELL.
Mounting Pole Kit PK-150 – Adjustable pole mount for elevated installation of the CN4-BELL in large open areas.
Sound Dampener SD-100 – Optional accessory for reducing the CN4-BELL’s output in noise-sensitive zones while maintaining coverage.
Relay Module RM-8 – Allows the CN4-BELL to be controlled by multiple input signals from different systems.
Test Button TB-1 – Manual test switch for verifying the CN4-BELL’s operation during safety inspections.
CN4-BELL
Installation and maintenance:
Before installing the CN4-BELL, conduct a sound survey of the target area to determine optimal placement—aim for locations where the bell’s tone will reflect off hard surfaces (like concrete walls) to maximize coverage, avoiding obstacles that could block sound propagation. Ensure the mounting surface is capable of supporting 5 kg (twice the bell’s weight) to prevent vibration-induced loosening over time. For outdoor installations, apply thread sealant to the conduit connection to prevent water ingress, and orient the bell’s opening downward to avoid debris accumulation. When wiring, use twisted-pair cable for control signals to minimize electromagnetic interference from nearby motors or transformers.
For maintenance, inspect the CN4-BELL quarterly for signs of physical damage, particularly to the bell mechanism and housing seams. Clean the exterior with a soft brush or cloth to remove dust and debris that could muffle sound output. Test all programmed tones monthly using the system’s control panel or a manual test switch to ensure they activate correctly and maintain proper volume. In high-vibration environments, check mounting hardware torque (15 Nm) every six months to prevent loosening. If the bell develops a distorted tone, inspect the clapper mechanism for wear and replace with genuine manufacturer parts if necessary—avoid using generic replacements that could compromise performance.
WhatsApp: +86 16626708626
Email: 3772179818@qq.com
Phone: +86 16626708626
