MA812/2 Milwaukee หัววัดค่า EC/TDS Replacement Probe 

The Milwaukee MA812/2 is the replacement EC/TDS Probe for PRO Monitors MC310 and MC410.
The MA812/2 has a rugged body designed to take hits and comes with a 2 meter (6') cable and DIN connector (meter(s) sold separately).
The probe connects quickly and tightly with a screw on DIN. No worries of slipping off.