Audible Signaling Devices

WERMA EvoSIGNAL Mini series audible horns provide modular warning in a compact 62mm platform, where mounting flexibility is an important design requirement. The horns deliver 95 dB at 1m and support continuous or pulse operation. Models are offered for low-voltage or 115-230 VAC systems and require a separately selected Mini mounting adapter to complete the installation.

• Mini (62mm diameter) series: 2 tone continuous or pulse, 95 dB @ 1m
• Midi (85mm diameter) series: 10 selectable tones, 110 dB @ 1m
• Voltage ratings include 115 to 230 VAC, 12 VAC/VDC, 24 VAC/VDC
• Base, tube, bracket, and wall mount options
• Requires mounting adapter, sold separately
• IP66 protection rating

WERMA EvoSIGNAL Midi series audible horns provide modular signaling where higher sound output and greater tone flexibility are required than the Mini family provides. The 85mm platform delivers up to 110 dB at 1m with 10 selectable tones and accepts interchangeable mounting adapters. Low-voltage and 115-230 VAC versions use IP66 construction for industrial installations.

• 110 dB at 1m provides 15 dB greater rated output than EvoSIGNAL Mini for applications requiring wider audible coverage
• 10 selectable tones support differentiated machine states rather than a single continuous or pulse alarm
• Base, tube, and wall-mount adapters allow the same horn to be configured around equipment geometry
• 12/24 VAC/VDC and 115-230 VAC versions allow selection for either low-voltage controls or line-voltage installations

WERMA 570, 571, and 573 series signal horns provide wall-mounted continuous audible warning for machinery and industrial areas. Series 570 and 571 use trumpet-style housings and produce 108 dB at 1m, while the more compact 573 produces 105 dB. All represented models use a 100 Hz continuous tone, with construction and enclosure protection providing the primary family distinctions.

• Select 570 or 571 when 108 dB output is required, or 573 when 105 dB is sufficient and a more compact housing is preferred
• Series 570 uses ABS/polycarbonate construction, while series 571 uses aluminum where housing material influences the application
• Series 573 provides IP65 protection for installations requiring a defined dust- and water-resistant enclosure
• 24 VDC and 115 VAC versions allow the horn to match common machine or facility power systems

Patlite BD and BSV series electronic alarms provide panel- or surface-mounted audible signaling where selectable alarm sounds are more important than a standard pilot-device format. BD models provide 32 selectable tones and up to 90 dB output, while BSV models provide 15 tones and up to 85 dB. Both operate from 12-24 VDC and use IP54 housings.

• Choose BD series alarms where extensive alarm differentiation is required, with 32 selectable tones from 191 Hz to 1.7 kHz
• BSV series alarms provide 15 selectable tones from 246 Hz to 2.9 kHz for applications that need fewer sound patterns

Pfannenberg PYRA series audible signal horns provide a modular sound element for machinery using the PYRA signaling platform. The horn produces 105 dB at 1m with 80 selectable tones and supports 12-48 VDC or 115 VAC operation. IP66, NEMA 4/4X construction allows the audible element to be combined with compatible PYRA bases and visual elements in a common signaling assembly.

• One- through four-tier PYRA bases allow the horn to be combined with additional visual elements when a multi-signal assembly is required

Pfannenberg PATROL series audible signal horns provide configurable industrial warning with four output classes sharing a common 80-tone architecture. PA1, PA5, PA10, and PA20 models span approximately 105 to 122 dB at 1m, allowing sound coverage to scale with the application. AC and DC versions use IP66, NEMA 4/4X construction for exposed machinery and facility installations.

• All four families provide 80 selectable tones from 150 Hz to 2.9 kHz, allowing common alarm conventions across different output levels
• PA1 and PA5 support 10-57 VDC or 115 VAC, while PA10 and PA20 extend the DC range to 10-60 VDC and offer 95-265 VAC versions
• PA1 adds panel and M12-connected configurations, while higher-output models are intended primarily for surface-mounted area warning

Patlite EHS series signal horns provide higher-output audible warning for machinery and industrial areas where panel-mounted buzzers do not provide sufficient coverage. Bracket-mounted models deliver 110 dB at 1m and provide 32 selectable tones from 293 Hz to 3.5 kHz. DC and AC versions support 12-24 VDC or 100-240 VAC systems with IP65 polycarbonate housings.

• 32 selectable tones allow different fault, warning, or operating conditions to be differentiated acoustically
• Bracket mounting allows the horn to be aimed or positioned independently from the operator panel for better sound coverage