Universal Recessed Door & Window Sensor, 345 MHz Wireless, Compatible with Honeywell, 2GIG, and Vivint Security Systems

Recessed wireless door and window contact sensor operating on the 345 MHz frequency. Designed for concealed installation inside doors or window frames for a clean, tamper-resistant appearance. Uses a magnetic contact to detect open and close activity reliably. Universally compatible with alarm systems that use 345 MHz sensors, including platforms from Honeywell, 2GIG, and Vivint. Not manufactured by, affiliated with, or endorsed by any alarm system brand.

• Fully concealed installation inside door or window frame Clean, invisible appearance with no surface hardware Tamper-resistant; difficult to see, access, or bypass Reduced risk of accidental damage or removal No exposed parts to snag, bump, or break Preserves door and window aesthetics Ideal for finished interiors and professional installations Reliable magnetic open/close detection Stable alignment once installed Less susceptible to pets, cleaning, or daily contact Long-lasting battery with up to 5-year service life Protected placement extends overall sensor longevity Professional-grade security solution Suitable for residential and light commercial use