Door and Window Dial Combination Handle Lock Die Cast Zinc Keyless Code

Code-Operated Handle Lock for Doors and Windows
This streamlined code-operated handle lock is a security hardware solution specifically designed for single-pane casement windows. The entire unit is made of a single-piece die-cast zinc alloy, featuring simple installation and effortless operation. It features a keyless design and is equipped with a three-digit die-cast zinc alloy combination dial. It offers a wide range of code combinations, with up to 10,000 possible combinations. Manufactured in strict compliance with the QB/T5338-2018 industry standard, this product is compatible with casement windows made of aluminum alloy or UPVC profiles with a thickness of 40–60 mm. It can be used in conjunction with hinge kits and five-piece door and window hardware sets. Corrosion- and wear-resistant, the entire unit comes with a 5-year warranty, making it the preferred security accessory for windows in high-rise residences and children’s rooms.

I. Sturdy All-Zinc Alloy Body: Weather-Resistant, Wear-Resistant, and Customizable
The handle is made of thickened zinc alloy through one-piece die-casting, featuring a solid and stable structure that resists prying, compression, and external impacts. It remains resistant to deformation and breakage even after long-term, repeated twisting. It comes standard with a pearl chrome plating finish, offering a smooth, matte texture that is wear- and scratch-resistant. Custom surface finishes are available upon request, with a minimum order quantity of 1,000 sets.
The product has passed a 500-hour neutral salt spray test and a 4H surface hardness test, with a lock latch tensile strength exceeding 350 N·m, demonstrating exceptional coating adhesion. Even with long-term exposure to sunlight and humidity on balconies or street-facing outdoor areas, the product is resistant to rust, peeling, and loss of luster, demonstrating excellent outdoor weather resistance.

II. Two- and Three-Digit Combination Lock Structure: Keyless Security Protection
Equipped with three independent combination dials, it offers tens of thousands of possible combinations, significantly enhancing theft and prying resistance. There is no need to carry keys, completely eliminating the hassle of losing keys or or forgetting them.
It features a built-in child safety lock; the handle can only be released after entering the correct code. Once locked, the handle is completely secured and cannot be turned, effectively preventing children from accidentally opening the window and reducing the risk of falls from heights, thereby comprehensively enhancing home safety.
The overall design features a curved, streamlined, ergonomic shape with rounded edges and no sharp corners. The window opens and rotates smoothly and effortlessly, combining practicality with a modern, minimalist aesthetic.

III. Standard, Universal Profiles: Easy Installation with Complete Accessories
Compatible with mainstream 40–60 mm thick aluminum alloy and UPVC single-sash casement window profiles on the market; comes standard with a handle shaft and screws. The base features pre-drilled standard mounting holes, allowing direct integration with hinges and door/window hardware to form a complete system. Standard cutouts eliminate the need for material modification or cutting, saving time and effort for door and window manufacturers during bulk assembly and effectively reducing labor costs.

IV. Rigorous Quality Inspection and Certification, with a Five-Year Warranty
Products undergo a comprehensive set of rigorous tests before leaving the factory, including 100,000-cycle opening and closing durability tests, torsional fatigue tests, and wear and corrosion resistance tests. The internal transmission operates smoothly without jamming or abnormal noises, and remains secure without loosening or play even after long-term, high-frequency use.
The manufacturer offers a 5-year warranty and comprehensive after-sales support. These products are suitable for single-pane casement windows in home renovations, skylights in real estate projects, and casement windows in commercial stores, meeting the needs of both domestic home renovation projects and bulk purchases for export.