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This is a Dynaco DY4100 Dynalogix II Door Controller, a reliable and robust solution that automates and monitors commercial or industrial doors. Whether you’re maintaining equipment or retrofitting existing systems, this unit delivers consistent performance.
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Item Condition
• Used — Fully functional with normal cosmetic signs of wear (scuffs or surface scratches consistent with previous use).
• Tested thoroughly: powers up, circuits active, displays/timers functional. Works exactly as intended.
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Key Features & Benefits
• Trusted Brand — Dynaco: synonymous with industrial-grade door operators.
• Model/MPN: Dynalogix II (DY4100) — well-known and supported parts.
• Seamless Integration — Fits systems requiring this precise model. Ideal for technicians, facilities teams, or retrofits.
• Sold “As Is, Working” — No guesswork. Powered on and verified.
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What You’ll Receive
• 1 × Tested Dynaco DY4100 Door Controller (see photos for exact condition)
• No accessories included (wiring, mounting gear, etc.) unless listed or pictured.
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• Shipping: FREE via USPS Ground Advantage from Spartanburg, SC

 Returns & Guarantee
• Money Back Guarantee applies — you’ll receive the item as described or get your money back.
