SMC, Model: VX 3114-02-4GR1 ( AC/Class B coil (Built-in full-wave rectifier type)
Naming Designation: 31 - Model, 1- Orifice Diameter (1.5), 4 - Valve/Body type (COM, Single Unit), 02- Port Size (1/4), 4- AC 220 V, G- Electrical Entry (Grommet), R- Built in Full wave rectifier type.