We use and recommend Schneider Electric TM221, 241, 251, 262 PLC Processors. Schneider Electric Magelis HMI STU and HMI STM Human Machine Interface. Schneider Electric Altivar 600 and 900 Variable Speed Drives Schneider Electric ATS22 Soft Starters Teltonika Modems Grundfos MP204 and CU352 Pump Monitoring and Control Systems. Vacon and Danfoss Variable Speed Drives.