| Number of Inputs | : | 3 |
| Mounting Style | : | DIN Rail Mount |
| Probe Voltage | : | 12V ac |
| Supply Voltage | : | 214 → 415 V ac |
| Overall Length | : | 53mm |
| Overall Depth | : | 90mm |
| Minimum Operating Temperature | : | 0°C |
| Maximum Operating Temperature | : | +50°C |
| Number of Outputs | : | 2 |
| Series | : | SM20 |