| DS2 | 2 - dry contact or digital inputs |
| DS4 | 4 - dry contact or digital inputs |
| DS5 | 4 - dry contact or digital inputs
1 - relay output (0.5A) |
| DS8 | 8 - dry contact or digital inputs |
| DS9 | 8 - dry contact or digital inputs
1 - relay output (0.5A) |
| DS11 | 8 - dry contact or digital inputs
2 - analog inputs (0-20ma, 4-20ma, 0-5VDC, 1-5VDC)
1 - relay output (0.5A) |
| DS13 | 8 - dry contact or digital inputs
4 - analog inputs (0-20ma, 4-20ma, 0-5VDC, 1-5VDC)
1 - relay output (0.5A) |
| -N | In a NEMA 4X enclosure |
| -NC | In a NEMA 4X enclosure with integral CDMA cell phone |
| -NG | In a NEMA 4X enclosure with integral GSM digital cell phone |
