Range 
PH:0.00-14.00PH
ORP:-2000mv-+2000mv 
EC:0-19000us/cm.0-199.0ms/cm 
CF:0--1999.0CF 
TDS:0~19990ppm，0~199.0ppt 
SALT:0~199.9ppt，0%~20% 
S.G:0.990~1.400 
Temp:0-50℃(32F-122F)
Resolution 
PH: 0.01PH 
ORP:1mV 
EC:1us/cm(<1999).10us/cm(>1999)<0.1ms/cm 
CF: 1CF 
TDS:1ppm(<1999)，10ppm(>1999)，0.1ppt 
SALT:1ppm(<1999)，10ppm(>1999)，0.1ppt S.G:0.001 Temp;0.1℃(0.2F)
Accuracy
PH:+0.03 PH
ORP:+5mv 
Temp;±1.0℃(±2下 ) 
EC/CF/TDS /SALT:±2% F.S
Operating Temperature:0℃~50℃
Temperature Compensation :0℃~50℃
Power Supply : DC6V
Dimensions:152 mm x80 mm x 26 mm
1)With data logger function
--The data supports exporting to the mailbox, and you can view the data of the day, week, and month.

Focus on:
It is no problem to connect 20 devices to a mobile app at the same time. The app will be automatically named device 1, device 2,device 3.... just open the page to see which device data
Notice:
One device can only connect to one mobile phone in the same network. If you want to connect to another mobile phone, remember to delete the device in the app on the originally connected mobile phone. Otherwise, other mobile phones will not be able to search