Serial Transmission System
| Series/CAD | Enclosure | Communication protocol | Applicable valve |
| EX120 |
IP20 | CC-Link OMRON Corp. (CompoBus/S) SUNX Ltd. (S-LINK) NKE (Wiring saving system) |
SV1000,2000,3000,4000 VQ1000,2000 |
| EX121 |
IP20 | SY3000,5000 | |
| EX122 |
IP20 | SY3000,5000 | |
| EX123 |
IP65 | VQ2000,4000,5000 | |
| EX124 |
IP65 | VQ2000,4000,5000 | |
| EX126 |
IP67*1 | SV1000,2000,3000 VQC1000,2000,4000 | |
| EX140 | IP20 | SZ3000,SQ1000,2000 | |
| EX180 |
IP20*2 | SJ2000,3000 | |
| EX260 |
IP67 | DeviceNetTM PROFIBUS DP CC-Link EtherCAT PROFINET |
SY3000/5000 SV1000/2000/3000 VQC1000/2000/4000 |
| IP40 | S0700 |
