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Bluetooth PH Meter 2 IN 1 HEDAO BlueTooth H2 Temp Meter BLE-9002
Range :
H2: 0~2990ppb
TEMP: 0.1-60.0°C; 32.0-140.0℉
Resolution:
H2: 1ppt,0.01 ppt
TEMP:0.1°C;0.1℉
Accuracy:
TEMP: ±0.5℃
Waterproof :IP67
Envir0nment :0.1-80.0°C, RH Max:90%
H2 : Automatic Calibration (750ppb)
szie :187*37*37mm
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H2 METER,Smart Blue Tooth H2 Meter 
Bluetooth PH Meter 3 IN 1 HEDAO Bluetooth PH TDS TEMP Tester with 5-point Calibration BLE-9901
Bluetooth PH Meter
Note: Blue tooth is backlit and non-backlit integrated,
When your smartphone is not available, the product can be used as a classic tester
Range :
pH: 0.00~14.00pH
TEMP: 0.1-60.0°C; 32.0-140.0℉
TDS:0~9999ppm
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Bluetooth,Blue tooth,3 in 1 
