Honeywell Home 4939SN-GY V-Plex Surface Mount Contact with Cover, Grey

Optimize perimeter security with the Honeywell Home 4939SN‑GY V‑Plex surface mount magnetic contact — a dependable sensor for professional security, surveillance, and monitoring installations. Designed for control panels that support serial number device capabilities and multiplex polling loops, this programmable magnetic contact delivers precise door/window status reporting with a standard 1-1/4" (32 mm) gap and a 5' (1.5 m) prewired cable that simplifies wiring and reduces installation time.

The low‑profile grey housing blends into commercial and residential environments while providing tamper‑resistant protection and durable operation in extreme temperatures down to -76°F. As part of the Honeywell Home (Resideo) V‑Plex line, the 4939SN‑GY helps integrators maintain reliable sensor networks with fewer service calls and better overall system uptime. Ideal for access control, intrusion detection, and surveillance monitoring, it supports streamlined commissioning and consistent performance across multiplexed sensor arrays.

Upgrade your security system with a proven, professional‑grade contact sensor — add the Honeywell Home 4939SN‑GY to your next installation or retrofit to improve perimeter monitoring and system reliability.

• Provides reliable door/window monitoring for commercial and residential security systems, reducing false alarms and improving perimeter protection
• Integrates seamlessly with V‑Plex panels supporting serial number device multiplex polling for simplified system management
• Surface‑mount, low‑profile grey design with 1-1/4" (32 mm) standard gap for accurate, tamper‑resistant installation
• 5' (1.5 m) prewired cable speeds installation and wiring in tight enclosures or retrofit projects
• Built to perform in extreme conditions (down to -76°F) with a 2‑year limited warranty for long‑term reliability
• Programmable configuration options let integrators tailor behavior to site requirements and surveillance workflows