7-in-1 Water Quality Test Pen - Tester Measures Water by PH TDS EC ORP S.G Water Salinity Temp Light Bulbs & LEDs Resolution: 5

Resolution: 5

Number of Bulbs: 10

Function: Remote control with Power on/off

design and other needs

7-in-1 Water Quality Test Pen - Tester Measures Water by PH TDS EC ORP S.G Water Salinity Temp Light Bulbs & LEDs Resolution: 57 in 1 Water Quality Test Pen Tester Measures Water by PH TDS EC ORP S. G Water Salinity Temp Product Features: 7 in 1: The water quality test pen is a 7 in 1 style. PH, TDS, EC, salinity, ORP, temperature, SG can be measured simultaneously with high precision. The measurement range is large and wide, which can measure freshwater salinity and sea salt, and measure water quality in all directions to ensure healthy water quality. 1. PH value 0. 01 14.