BLE 9909 :: Smart pH/TDS/EC/Salinity/Temperature Bluetooth

Reads: EC, pH, TDS, ORP, Salinity & Temperature 
- pH range: 4.00 - 10.00 
- EC range: 10.01-19.99 ms/cm
- TDS range: 0-9999 ppm; 10.1-200.0ppt
- Salinity: 0.01-25.00 %
- Temperature: 0.1 - 60.0 C 

- Brand: Yieryi .
- Made in: China .