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• Monitors temperature and humidity in crawl space
• Wireless crawl space sensor
• Portable LED screen  
• Wall hanging or free standing

Specifications:

• Outdoor Relative Humidity 1% to 99%
• Outdoor Relative Temperature Range  -39.8 F to 139.8 F.
• Indoor Relative Temperature Range: 14.1 F to 139.8 F.
• Wireless Transmission Range: up to 330 feet
• Can receive up to 3 Sensors