SK4510S SFIC Key Override – Adams Rite 4510S Replacement

Done With Keys? Or Need a Backup? The SK4510S Has You Covered Either Way.

Picture this: it’s Monday morning, your employee lost their key over the weekend, and you’re staring at a $300 locksmith bill — again. The EASILOK SK4510S ends that cycle for good. It’s the only keyless mechanical keypad deadlatch that drops directly into your existing Adams Rite 4510S door prep, with the added flexibility of an SFIC key override for businesses that need a professional backup or master-key system.

The Pain Point — Solved

If you own a retail shop, office, or clinic with a standard aluminum glass door, you’re likely dealing with an Adams Rite 4510S style lock. Managing keys for employees, worrying about lost sets, or paying for a locksmith every time someone leaves is a headache you don’t need. The SK4510S is your solution — keyless by default, with a physical key override when you need it.

Core Benefits

• 100% Keyless Freedom — No batteries, no apps, no wiring. A heavy-duty mechanical keypad that works in rain, snow, or shine, every single time.
• SFIC Key Override — Features an SFIC (Small Format Interchangeable Core) housing for a physical key backup or integration into a professional master-key system. The best of both worlds.
• Drill-Free DIY Installation in 15 Minutes — Our patented axial fastening system uses the factory holes already on your door. Just a screwdriver. No damage, no contractor.
• True Universal Handing — Non-handed design with a reversible keypad and push paddle. Left or right swing — it fits perfectly without special ordering.

SK4510 vs. SK4510S — Which Is Right for You?

• SK4510 (Pure Keyless) — No keyhole, no cylinder. Maximum convenience for high-traffic employee entry.
• SK4510S (SFIC Key Override) — Same keyless functionality, plus an SFIC housing for a physical key backup or master-key integration. Ideal for business owners who want both options.

Before You Buy — Check Your Measurements

• Compatible with: Adams Rite 4510S, Ilco 451, GMS DL4510
• Backset sizes: 31/32" (25mm) · 1-1/8" (29mm) · 1-1/2" (38mm)
• Exit method: Push Paddle (push-to-exit only; not compatible with pull-to-exit setups)
• ⚠️ No Hold-Back Function: Does not support stay-open/latch retraction mode. For constant passage needs, see our SM1850 Series.