Wireless Temperature Sensor and Flood Detector

Ideally suited for applications including bathrooms, laundry rooms and basements, the 5821 helps protect against temperature fluctuations and flood conditions. The versatile device can be configured to operate as a standalone temperature sensor and/or a remote temperature sensor or flood detector. Fully compatible with Resideo Total Connect Remote Services, it can send users email or text message alerts when detecting floods or extreme temperatures so they can take action to minimize and avert damages.

  • Five selectable temperature ranges to choose from (hot, warm, cold, refrigerate and freeze)
  • Remote Temperature Probe available (T280R) ideal for refrigerator and freezer monitoring
  • Flood detection with FP280 or 470PB External Probe for a wide range of applications; including bathrooms, kitchens, laundry rooms and basements
  • Up to 10 year battery life, which reduces user maintenance
  • Completely wireless, which greatly reduces installation time and maximizes placement options
  • Capable of monitoring cold (45°F) temperature and flood detection simultaneously
File NameSizeRelease DateResource Type
5821 Environmental Sensor End User Trifold - Spanish PDF 166.57 KB 11/18/2019 Brochure
Environmental Sensors Flyer PDF 147.16 KB 06/04/2019 Brochure
Environmental Sensors Flyer - French PDF 149.05 KB 11/04/2019 Brochure
5821 Data Sheet PDF 79.82 KB 06/04/2019 Data Sheets - Dealer
5821 Data Sheet - French PDF 78.36 KB 08/14/2019 Data Sheets - Dealer
5821 Environmental Sensor End User Trifold PDF 163.02 KB 06/04/2019 Sales-End User
5821 Environmental Sensor End User Trifold - French PDF 165.39 KB 07/03/2019 Sales-End User
Part No. Description
5821 Wireless Temperature Sensor & Flood Detector
T280R External Probe for Freezer and Refrigeration Monitoring
FP280 External Probe for Flood Sensing
(wire and internal resistor included)
470PB External Probe for Flood Sensing