Specifications:
Perpetual calendar
12 or 24-hour time display
Time clock
Indoor Temperature Range: 0°C to +50°C
Temperature Accuracy: ±1.0°C
Option of °C/°C
Indoor humidity range: 20% to 90%
Humidity Accuracy: ±5%
Management of solar power

Power Consumption:
Alkaline Battery: 1xAA 1.5V or rechargeable battery:1xAA 1.5V
Battery Life:
  Non-Rechargeable Battery: Minimum 12 months
  Rechargeable Battery: Minimum 24 months

Dimension (HxWxD):
310mmx248mmx40mm