Honeywell Home 5821 Wireless Temperature Sensor and Flood Detector

Protect sensitive areas from costly water damage and temperature-related failures with the Honeywell Home 5821 Wireless Temperature Sensor and Flood Detector. Designed for bathrooms, basements, laundry rooms and commercial utility spaces, the 5821 gives facilities managers and security integrators reliable leak and temperature monitoring that reduces downtime and repair costs. The unit supports cold and hot temperature thresholds (for example 45°F and 95°F) and can detect liquid leaks while operating wirelessly on a single 3V battery with up to 10 years of life. Fully compatible with Honeywell 5800 Series receivers and Resideo Total Connect remote services, it delivers real-time alerts via email or text so your surveillance and security teams can take immediate action. Compact and easy to mount, the 5821 fits into existing security and monitoring installations—making it a smart addition to access control, alarm, and building management systems. Add the 5821 to your security and monitoring plan to proactively protect assets and minimize downtime.

• Proactively protects basements, laundry rooms and utility spaces by detecting floods and extreme temperatures before damage occurs
• Long-life 10-year battery reduces maintenance and keeps monitoring active for years
• Completely wireless design allows flexible placement and fast installation with Honeywell 5800 Series systems
• Dual-purpose sensor: configurable as a remote temperature sensor or a dedicated flood detector for versatile monitoring
• Integrates with Resideo Total Connect for instant email/text alerts and remote monitoring via security dashboards