Features:- 
- Max/ min reading memory 
- Ice point alert 
- Waterproof external sensor for outdoor temperature display  
- °C/ °F exchange 
- Foldaway stand 
- Hook and loop tape fixing 

Specification:- 
Measuring range: 20~99% RH, 0~50°C / 32~122°F(internal temp) , -50~70°C / -58~158°F(external temp) 
Display accuracy: ±3% at 25% RH, ±1°C / ±2°F over full range 
Display resolution: 1%, 0.1° 
Display reading update: 10 seconds 
Battery: 1.5 volt, size AAA or equivalent x 1 piece 
Ice point alert: Outdoor reading < =0°C / 32°F 
External sensor cord length: 3 meters 
Display size: 52(W) x 13(H) mm 
Product size: 76(W) x 41(H) x 18(D) mm