Pollak 41-821 Heavy-Duty 97dB Back-Up Alarm – Stud Terminals, 12V-24V Multi-Voltage Reverse Alert

Professional Reverse Safety with Secure Stud Terminal Connections

The Pollak 41-821 Back-Up Alarm is the industry-standard choice for medium and light-duty commercial vehicles requiring a reliable, high-performance reverse warning signal. While sharing the same compact and rugged architecture as the popular 41-820 model, the 41-821 features integrated stud terminals and an included ground strap, providing a more robust and permanent connection point for heavy-duty wiring.

Emitting a powerful 97 decibel signal, this alarm is designed to replace bulky, oversized units on dump trucks, motor homes, forklifts, and utility vehicles. Its solid-state construction ensures it can handle the vibration and environmental stress common in vocational trucking.

Key Features:

• Secure Stud Terminals: Designed for heavy-duty applications, the stud connectors (vs. wire leads) allow for a secure, bolt-on electrical connection that resists vibration and pulling.

• Ground Strap Included: Simplifies installation by providing a reliable grounding path directly from the unit.

• Universal Multi-Voltage: Fully compatible with both 12V and 24V DC systems; features voltage spike and reverse polarity protection.

• Rugged & Steam-Cleanable: Encased in high-impact, non-corroding plastic. The unit is sealed to be pressure-washable and steam-cleanable for easy maintenance.

• Compact Mounting: The small footprint allows for horizontal or vertical mounting in protected areas or tight chassis spaces.

• Extreme Temperature Reliability: Engineered to operate in harsh climates, ranging from -40°F to +170°F (-40°C to +77°C).

Technical Specifications:

• Part Number: 41-821

• Sound Level: 97 dB(A) ±4 @ 4 feet

• Voltage Rating: 12-24 VDC

• Current Draw: Ultra-efficient (less than 0.7 Amps)

• Connection Type: Stud Terminals (with Ground Strap)

• Dimensions: 4" W x 2.5" H x 2" D

• Certifications: Meets S.A.E. J994 Type B; compliant with OSHA, Bureau of Mines, and U.S. Army Corps of Engineers requirements.