3 In1 Digital LCD TDS EC Meter Temperature Tester Conductivity Water Filter Purity Pen Liquid Quality Tools

Description

Test items:Water quality TDS ppm (mg / L), conductivity us / cm, Celsius temperature ° C, Fahrenheit temperature ° F. Basic functions: * Switch / lock button (ON / OFF / HOLD) Function:  Power on: in the shutdown state, press the button, you can boot.  Automatic shutdown: 5 minutes after the use of automatic shutdown.  Manual shutdown: press the button 3s to shut down continuously.  * Press the function key to display the test water quality conductivity us / cm value, and then press once to display the Celsius temperature ℃, then press once again to display the Fahrenheit. The function selection button (MODE): the default display test water quality total solid dissolved amount ppm; Temperature ℉; then repeat the cycle to display the above.  * CLEAR key function: clear. Clear the lock read and re-test.  * Automatic test and lock reading: clear after the insertion of water can be automatically read, according to the different water quality shows the corresponding TDS value or conductivity us / cm value. And then automatically locked.  * Scale function: according to national standard scale. And with appropriate reference to international practice. Direct drinking water warning with reference to national standards using TDS = 40 for the dividing line. Less than 40 show green backlight, for qualified straight drinking water, more than 40 show red backlit, for non-direct drinking water.  * Backlight function: the use of low-power backlight, easy to night and light dark place for testing use. At the same time as a direct drinking water to determine the show.  * Large screen display: the use of high distortion STN thin liquid crystal, display 4-digit value and the corresponding physical unit.