specification

measuring range:
tds range:0-9990ppm
ec range:0-9990us/cm
calibration:factory calibrated
auto shut-off: 3 minutes
operating temperature:0-99"c&32-212f
accuracy:±2%
power source:2x1. 5v lr44
smart functions:
auto checking&lock,
tds<40ppm, green light
tds≥ 40ppm, red light 

carton size:42*33.5*35cm

280pcs per carton

g.w:20kgs/carton