Soil Thermometer RT- 642S
	The soil PH is an important factor to limits the crops productions and the quality. This Instruments is simle and convenient, can directly insertthe soil.
	
	
Features
	
      -  Air temperature & Soil temperature display
 
      -  Air humidity display
 
      -  Sunlight intensity display
 
      -  Changeable Temperature unit (°C/°F)
 
      -  Data-hold function
 
	  -  Display of comfort degree
 
      -  Soil Temperature Range: -20°C to +70°C (-4°F to +158°F)
 
      -  Air Temperature Range: -10°C to +50°C (+14°F to +122°F)
 
      -  Air Humidity Range: 20% RH to 99% RH
 
      -  Power supply: 9V battery