The testo 174H is an ideal logger for the continuous         monitoring of temperatures and humidity. The 174H         has clear indicaions of when humidity and         temperature thresholds have been exceeded.
        – High accuracy NTC thermistor sensor for reliable         measurement data of temperature and humidity
        – Easy to read large display that shows current         reading and exceeded measurement limits
        – IP65 proection class
        – HACCP compliant
        Please note: The testo 174H temperature and humidity         data logger requires an interface. One interface can         be used for multiple instruments.       
 
          
What's included:
        testo 174H temperature and RH measurement logger
          
         Temperature – NTC
          
| Technical data
 |              | 
| 
            Measuring range 
 | 
                       -4¡Æ to 158 ¡ÆF / -20 to +70 ¡ÆC 
 | 
| 
            Accuracy 
 | 
                       ¡¾0.9 ¡ÆF (-4¡Æ to 158 ¡ÆF) / ¡¾0.5 ¡ÆC (-20            to +70 ¡ÆC) 
 | 
|            Resolution | 
                      0.1 ¡ÆF / 0.1 ¡ÆC | 
          
         Humidity – Capacitive
          
| Technical data
 |              | 
| 
            Measuring range 
 | 
                       0 to 100 %rH* 
 | 
| 
            Accuracy 
 | 
                       ¡¾3 %rH (2 to +98 %rH)                       ¡¾0.03 %rF/K 
 | 
|            Resolution | 
                      0.1 %rH |