| Sensor Type | 
            
            
                - Temperature: thermistor
 
                - Humidity: ceramic resistance formula
 
                - Illumination: ambient light sensor IC
 
             
             | 
        
        
            | Measurement range | 
            
            
                - Temperature: -10 ~ + 50 ℃
 
                - Humidity: 20 to 95%
 
                - Illumination: 0 ~ 30,000lux
 
             
             | 
        
        
            | resolution | 
            
            
                - Temperature: 0.1 ℃
 
                - Humidity: 1% RH
 
                - Illuminance: 1lux (0 ~ 3,999lux), 100lux (4,000 ~ 30,000lux)
 
             
             | 
        
        
            | Accuracy | 
            
            
                - Temperature: ± 1 ℃ (0 ~ + 40 ℃), ± 2 ℃ (otherwise)
 
                - Humidity: ± 5 ℃ (+ 25 ℃, 40 ~ 85% RH), ± 10% (otherwise)
 
                - Illumination: ± 20% rdg
 
             
             | 
        
        
            | Log type | 
            Repeated use | 
        
        
            | Recordable period | 
            
            
                - Between 84 days (sampling interval: 1 hour)
 
                - 21 days (sampling interval: 15 minutes)
 
                - 33 hours (sampling interval: 1 minute)
 
             
             | 
        
        
            | Use temperature and humidity | 
            -10 ~ + 50 ℃, 20 ~ 95% RH or less (without condensation) | 
        
        
            | Storage temperature and humidity | 
            -10 ~ + 60 ℃ (however, that there is no condensation) | 
        
        
            | The maximum communication distance | 
            About 10m (outlook state) * | 
        
        
            | Corresponding OS ** | 
            
            
                - iOS: 7.1 or higher
 
                - Android: 4.4 or higher
 
             
             | 
        
        
            | Bluetooth version | 
            4.0 or higher | 
        
        
            | Size | 
            
             About W32 × H76 × D32 mm 
             | 
        
        
            | weight | 
            About 65g (including battery) | 
        
        
            | Power supply | 
            2 AAA type batteries × | 
        
        
            | Battery life | 
            About 12 months *** (when sampled at one minute intervals) | 
        
        
            | accessories | 
            QUICK START GUIDE | 
        
        
            | Proofreading | 
            Yes 
             
             |