Pulse Tone Generator Grothe SU 1170A

The Grothe SU 1170A pulse tone generator is designed to produce clear, stable audio tones for signaling and alert systems. Intended for operation on 8–12 V AC supplies, the unit offers reliable tone generation in a compact housing measuring approximately 99 mm in width and 62 mm in depth. Its compact footprint and straightforward electrical requirements make it suitable for integration into intercoms, door entry systems, and other installations where audible pulses are required.

Advantages

The SU 1170A provides consistent pulse tone output with minimal configuration, supporting reliable audible signalling in both new installations and retrofit projects. Its small dimensions allow placement in confined mounting spaces, while the 8–12 V AC operating range ensures compatibility with common low-voltage building power systems. The device’s engineering emphasizes stable tone frequency and repeatable performance over extended use.

Suitable for

• Door entry and intercom systems requiring audible call tones
• Signalling in access control and gate systems
• Retrofit upgrades in residential and light-commercial installations
• Alert and notification circuits in building automation

Key specifications

• Operating voltage: 8–12 V AC
• Dimensions: approximately 99 mm (width) × 62 mm (depth)
• Function: pulse tone generation for audible signalling
• Mounting: compact housing suitable for concealed installation
• Compatibility: designed for low-voltage building systems and intercom equipment

How to use

Install the pulse tone generator in a dry, accessible location within the device cabinet or installation area, ensuring adequate clearance for wiring. Connect the unit to an appropriate 8–12 V AC power source following the system’s wiring schematic and applicable safety standards. Integrate the audio output connections with the intercom, bell, or signalling circuit as specified by the system design. After wiring, verify correct operation by actuating the signalling input and confirming clear pulse tones are produced.

Usage recommendations

For reliable long-term performance, use stable 8–12 V AC sources and protect the unit from excessive moisture and mechanical shock. Confirm compatibility with the host system’s impedance and output requirements prior to installation. When used in retrofit projects, inspect existing cabling and connectors and replace any degraded wiring to preserve tone clarity and system reliability.