The MARCO BZ3 is a compact, high-quality electronic cabin warning buzzer featuring a built-in EMI/EMC filter. Specifically designed for interior vehicle and marine audio alarms, it is the perfect solution for Signal Deviation and Anomaly Detection Systems (SAS). Thanks to its integrated electromagnetic interference suppression, it ensures that your sensitive onboard electronics and instruments remain fully protected from high-frequency electrical noise during operation.

Key Features

• Integrated EMI/EMC Protection: Built-in filter prevents interference with sensitive dashboard instruments.

• Efficient Performance: Low power consumption (just 15 mA) while delivering a clear acoustic alert.

• Versatile Integration: Ideal for boats, vehicles, control console boxes, and fault alert relays.

Technical Specifications

• Operating Voltage: 12 V DC

• Current Consumption: 15 mA

• Sound Output: 68 dB(A) @ 2 meters

• Frequency: 420 Hz

• Connection Type: Standard 2-pin polarity (+ Positive / - Negative Ground)

Installation & Maintenance Guidelines

• Mounting Location: Intended for dry, sheltered interior cabin locations. Ensure the buzzer is protected from direct water splash and extreme humidity.

• Wiring: Must be connected to a regulated 12V DC supply circuit protected by an inline fuse (max 1A).

• Maintenance: Keep the sound emission aperture clean and unobstructed by dust to ensure optimal volume.