Dimensions:
Receiver: 3.85 " x 2.45 " x .95"
Sensor: 3.46 " x 5.67 " x 2.15 "

• Self-empyting rain bucket - empties via internal tilting cups
• Displays total rain recorded
• Displays rainfall in last 24 hours
• Rainfall indicators: -Light rain; -Heavy rain
• User-defined rainfall alarm
• Low battery icon for both units
• Wall hanging or free standing
• Battery lasts up to 3 years

Specifications:

• Rain alarm: user defined for 0" to 4" over 24 hour period
• Transmission range: up to 330 feet
• Transmission frequency: 915 MHZ
  
• Power requirements:
  Receiver: 2 "AAA" Alkaline batteries
  Rain sensor: 2 "AAA" Alkaline batteries