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BLE-YL01 7-in-1 Chlorine Tester--Display + Remove the Electrode Protection Cover

BLE-YL01 Digital Chlorine Meter Calibration (Using Calibration Powder)

BLE-YL01 Digital Chlorine Meter pH and ORP Calibration (Using Calibration Solution)

BLE-YL01-- YIERYI 7-in-1 pH Meter, Chlorine Tester with Smart Hub

PH-2Pro-- Digital pH Meter

EC-8801B-- Soil EC/ Temperature Tester

YY-1000--Soil EC Meter for Soil Moisture Temperature and Conductivity Measures

SGH08-- YIERYI WiFi Sprinkler Timer with App/Voice Control for Lawns, Yard and Pool

EC-8801 2 in 1 Professional Digital Soil EC/Temperature Tester

YY-1031--pH Tester Calibration

YY-1031--Bluetooth pH Meter Bluetooth Connection + APP Display

YY-W9909 Smart Bluetooth Water Quality Tester Calibration

BLE-C600--7-in-1 pH Meter

YY-W9909 Smart Bluetooth APP Connection:

BLE-YC01 Digital Temp CL ORP EC TDS pH Meter

SGH08-- WiFi Sprinkler Timer---- How to Connect to Smart Life AAP?

SGH08-- WiFi Sprinkler Timer

5 in 1 Salinity/ pH/ TDS/ EC/ TEMP Water Quality Tester

4-in-1 Salinity Tester

SGH08-- WiFi Sprinkler Timer-- How to Set Manual Watering?

How to connect the BLE-C600 pH meter to Bluetooth ?

YY 1000 -- Soil EC Meter

PH-W2839 APP Connection

PH-2024------Digital Salinity Tester Calibration