Acoustic signalling
Acoustic signalling
Acoustic signalling plays an important role in industrial environments where audible warnings are needed to ensure the safety of personnel and installations. Acoustic signals immediately attract the attention of operators, even in situations with limited visibility or high noise levels. They are used for emergency notifications, process warnings and fault indications, and are an integral part of modern safety and control systems.
The audible alarms are designed for reliable use in harsh conditions. Thanks to high sound levels, a robust housing and durable components, they provide reliable audible alarms in production environments, warehouses and process installations.
When acoustic signalling is combined with visual signals, such as strobe lights or signal towers, the result is a complete warning system that helps operators respond quickly and appropriately to malfunctions or dangerous situations.
Our assortment of acoustic signalling
PRO 10 SIL 116 dB acoustic signalling
The Pfannenberg PRO 10 SIL is a powerful acoustic signal generator developed for safety-related industrial applications where functional reliability and clear audible warnings are essential. With a maximum sound pressure level of 116 dB(A), the device provides effective audible coverage even in noisy or large-scale environments.
Users can choose from 80 different tones, three of which are externally selectable. This offers maximum flexibility in adapting the signalling to specific requirements within process or machine safety. The sound pressure level can be reduced by up to 30 dB (to 86 dB(A)), internally or externally adjustable depending on the application.
A pre-alarm function enables two-stage warning with a reduced sound level, preventing startle reactions and supporting safe operator behaviour. The PRO 10 SIL is also designed for easy installation and maintenance, with seals and screws that significantly reduce wiring and assembly time.
- Sound pressure level up to 116 dB(A)
- 80 selectable tones, 3 externally configurable
- Pre-alarm and main alarm function
- IP 66 / IP 67 and IK09
- SIL 2 / PL d certified for safety-related applications
- Can be used at temperatures between -40°C and +50°C
- EAC compliant
Pfannenberg
Questions on acoustic signalling?
Our sales engineers would love to help you pick the best signalling technology for your solution
Pfannenberg
PA 1 PATROL acoustic signalling for industrial environments
The Pfannenberg PATROL series represents a new generation of industrial signal transmitters, combining safety, efficiency and ease of use. With a maximum sound pressure level of 105 dB(A) and excellent acoustic penetration, PATROL signal transmitters provide reliable and effective warnings, even in demanding industrial environments.
The PATROL design philosophy follows a threefold innovative concept:
- Safe: the intelligent design makes incorrect installation practically impossible.
- Simple: optimised mounting and wiring ensure significantly shorter installation times.
- Economical: high acoustic efficiency and excellent sound propagation through obstacles reduce the number of devices required per installation.
The series features external tone selection, allowing the signal transmitter to be flexibly adapted to different applications and alarm requirements. Designed for maximum reliability, PATROL signal transmitters feature a robust IK08 housing and IP 66 dust and water protection. The patented Pfannenberg 3D Coverage method guarantees optimal acoustic coverage and cost efficiency.
- Sound pressure level up to 105 dB(A)
- External tone selection for flexible signalling
- Optional M12 connector
- Can be used at temperatures between -40°C and +55°C
- IP 66 and IK08
- EAC compliant
PA 1-R PATROL acoustic signalling to be mounted on devices or control cabinets
The Pfannenberg PA 1-R Patrol radial signal transmitter is a compact and reliable acoustic signalling device designed for industrial environments where clear and consistent alarm detection is essential. With a maximum sound pressure level of 105 dB(A), the device offers excellent 360° radial sound distribution, ensuring uniform coverage in all directions.
Because the PA 1-R can be mounted on top of equipment, the signal device is ideal as a stand-alone warning solution on machines or control cabinets. The multi-voltage power supply enables universal operation on different voltage systems, reducing the number of variants required.
Users can choose from 70 tones in 32 tone combinations, four of which are externally selectable, allowing flexible adaptation to different alarm and safety functions. The adjustable volume control allows the sound level to be precisely tailored to the application and the sound environment.
The PA 1-R can also be combined with an LED module (such as the PYRA-L-S) for combined visual and acoustic signalling, providing an integrated solution for comprehensive machine and process safety.
- 105 dB(A) sound pressure level with adjustable volume control
360° sound distribution for maximum audibility - 70 tones in 32 combinations, 4 externally selectable
- Optional M12 connector for quick installation
- Operating temperature: -25°C to +55°C
- IP 66 and IK08
Pfannenberg
Blogposts on optical and acoustic signalling
How to select the right signal tower for your machine or production line
Learn how to select the right signal tower based on environment, visibility, sound, technology and industrial standards for safe and reliable machine operation.
Light curtains: optical protection against dangerous situations
Safety light curtains, also known as light curtains or optical protection, are the ideal solution for protecting operators from dangerous machines and…
