Receiver: 4.26" x 4.64" x 0.67"

All Features:

• Indoor Humidity (%RH)
• Indoor Temperature (°F)
• Wall Hanging or Free Standing

• Indoor Humidity Range : 1% to 99%
• Wireless Outdoor Temperature Range: -21.8°F to 157.8°F
• Indoor Temperature Range :32°F to 139.8°F
  
• Power Requirements:
  Receiver: 2 "AAA" Alkaline Batteries