Pfannenberg – PA 20 95-265AC

The Pfannenberg PATROL PA 20 95-265AC delivers extremely powerful audible warning signals for large industrial facilities, infrastructure projects, and safety-critical applications. As the highest-output model within the PATROL sounder range, it combines exceptional sound performance, wide-area coverage, and simplified installation to provide highly effective alarm signaling in demanding environments.

Furthermore, the PA 20 95-265AC incorporates Pfannenberg’s advanced 3D Coverage technology, enabling outstanding sound distribution and excellent penetration around machinery, structures, and other acoustic obstacles. As a result, operators can achieve effective warning coverage across large areas while reducing the number of sounders required.

The PATROL design also helps simplify installation and commissioning. Its robust impact-resistant housing and industrial-grade protection make it suitable for indoor and outdoor environments, while external tone selection provides flexibility for a wide variety of alarm and warning applications.

Key Features

• High-performance industrial sounder
• Maximum sound output of up to 122 dB(A)
• Advanced PATROL 3D Coverage technology
• Excellent acoustic penetration and wide-area coverage
• Reduces the number of signalling devices required
• Fast and simple installation
• External tone selection
• Impact-resistant housing
• Suitable for indoor and outdoor applications
• NEMA 4 / 4X environmental protection
• UL approved
• EN54-3 certified
• VdS approved
• Approved by CNBOP-PIB
• EurAsian Conformity (EAC) certified

Acoustic Coverage

PA 20 LO (Low Output)

For applications requiring VdS / EN54-3 approval, the factory setting limits the sound output to 120 dB(A).

Coverage area with DIN tone:

• 80 dB(A): 68 × 77.6 × 68 m
• 85 dB(A): 38.2 × 43.7 × 38.2 m
• 90 dB(A): 21.5 × 24.5 × 21.5 m

PA 20 HO (High Output)

For industrial applications where VdS / EN54-3 certification is not required, the sound output can be increased to the maximum setting of 122 dB(A).

Coverage area with DIN tone:

• 80 dB(A): 85.6 × 97.7 × 85.6 m
• 85 dB(A): 48.1 × 55 × 48.1 m
• 90 dB(A): 27.1 × 30.9 × 27.1 m

Electrical Specifications

Available Supply Voltages

• 95-265 VAC
• 24 VAC
• 10-60 VDC

Rated Frequency

• 50/60 Hz (AC versions)

Operating Voltage Range

• 95-265 VAC
• 20-30 VAC
• 10-60 VDC

Nominal Current Consumption

• 95-265 VAC: 75-330 mA
• 24 VAC: 500-1800 mA
• 10-60 VDC: 120-880 mA