Model Number: AT-303C Brand Name: TLead Key Specifications/Special Features: 1.Temperature °C/°F display2.Clock, alarm3.Humidity and comfortable display4.Max/min temperature and humidity display5.Indoor temperature range: -10°C to 50°C, 14°C to 122°C6.Outdoor temperature range: -50°C to 70°C, -58°F to 158°F
7.Temperature resolution: 0.1°C (0.2°F)

8.Temperature accuracy: ±1.0°C

Humidity range: 20%RH - 99%RH

9.Battery voltage: 1.5V