Honeywell Home PROSIXMINI ProSeries 2-Way Mini Wireless Flat Door/Window Sensor

Next-generation, two-way wireless door/window sensor with encrypted communication for secure, reliable monitoring. Features 128-bit AES encryption, remote configuration, and system health diagnostics to minimize service calls. Battery-powered design with user-replaceable batteries and tamperproof construction. Supports One-Go-All-Go feature—when one sensor detects danger, all sensors in your system sound simultaneously. Includes mounting hardware. Compact flat design: 2.44"L x 1.25"W x 0.45"D. Easy installation and remote software updates reduce truck rolls and maintenance costs.