Description
Product Overview
The Rofu 3850 Fail Safe Deadbolt is engineered for commercial applications where security, durability, and ease of installation are paramount. Powered by a low‑current 12V DC source, this deadbolt provides reliable fail‑safe operation, meaning the lock remains unlocked during a power loss, a critical feature for safety‑focused facilities. The front faceplate is forged from premium stainless steel, offering resistance to corrosion, tampering, and harsh environmental conditions. Measuring 8″ in length with a compact width of 1‑3/16″ and a depth of 1‑5/8″, the unit fits standard door jambs and headers without requiring extensive modifications. The deadbolt incorporates special mounting tabs that simplify the attachment process, reducing installation time and labor costs. With a limited three‑year warranty, Rofu underscores its confidence in the product’s longevity and performance. The design balances a sleek aesthetic with robust functionality, making it suitable for a wide range of commercial settings, from office buildings to retail storefronts and industrial facilities.
![[Product front view showing all components]](https://www.olympusgo.store/wp-content/uploads/2026/07/9f6f1705ffc840bc87b0627ee584e09d.jpg)
Usage
Designed for versatility, the Rofu 3850 can be deployed in diverse environments where secure access control is essential. In office complexes, the deadbolt secures entry doors while allowing quick egress in emergencies, thanks to its fail‑safe characteristic. Retail locations benefit from the stainless steel finish that resists scratches and fingerprints, maintaining a professional appearance even under heavy foot traffic. Industrial warehouses appreciate the low power draw, which integrates seamlessly with existing building management systems without overloading circuits. The unit’s ability to be installed in either the jamb or the header provides flexibility for retrofits and new construction projects alike. Additionally, the deadbolt’s compact profile makes it an excellent choice for doors with limited clearance, ensuring that security does not compromise accessibility. Whether the application involves high‑traffic entry points, restricted access areas, or exterior doors exposed to the elements, the Rofu 3850 delivers consistent performance and peace of mind.
Why Choose Us
Choosing the Rofu 3850 means selecting a lock that combines engineering precision with practical benefits. Rofu International Corp has a legacy of producing high‑quality industrial hardware, and this deadbolt reflects that heritage through meticulous material selection and rigorous testing. The stainless steel faceplate not only enhances visual appeal but also extends service life by resisting rust and wear, reducing the need for frequent replacements. The low‑current 12V DC design aligns with modern energy‑saving initiatives, allowing facilities to maintain security without incurring high electricity costs. Our product includes special mounting tabs that are pre‑drilled and engineered for quick alignment, minimizing installation errors and accelerating project timelines. The three‑year limited warranty provides customers with confidence and a clear recourse should any manufacturing defects arise. Moreover, Rofu offers responsive technical support and a dedicated after‑sales team ready to assist with troubleshooting, spare parts, and maintenance advice, ensuring that your investment remains protected throughout its operational life.
Key Features
- Low‑current 12V DC operation reduces energy usage while delivering reliable fail‑safe performance.
- Stainless steel faceplate provides superior corrosion resistance and a professional appearance.
- Special mounting tabs simplify installation on both jambs and headers, saving time and labor.
- Compact dimensions fit standard door frames without sacrificing strength or security.
- Three‑year limited warranty backed by responsive customer support and after‑sales service.
FAQ
What does “fail safe” mean for this deadbolt?
Fail‑safe means the lock remains unlocked when power is lost, allowing safe egress in emergencies while still providing controlled access under normal power conditions.
Can the deadbolt be used on exterior doors?
Yes, the stainless steel construction and weather‑resistant design make it suitable for exterior applications where exposure to moisture and temperature fluctuations is common.
Is the 12V DC power source compatible with existing building systems?
The 12V DC requirement is low enough to integrate with most building automation or security systems without overloading existing circuits.
What is included in the installation kit?
The package contains the deadbolt unit, stainless steel faceplate, pre‑drilled mounting tabs, screws, and a concise installation guide to assist installers.
How does the warranty work?
The three‑year limited warranty covers manufacturing defects. Customers can contact Rofu’s support team for warranty claims, and replacement parts are provided as needed.




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