| Model | ADV551 | ADV561 |
| Number of output channels | 32 | 64 |
| Rated applied voltage | 24 V DC | 24 V DC |
| External power supply rating | 24 V DC, 50 mA | 24 V DC, 100 mA |
| External power supply voltage range | 20.4 to 26.4 V DC | 20.4 to 26.4 V DC |
| Output ON voltage maximum value | 2 V DC | 2 V DC |
| Leak current maximum value when output OFF | 0.1 mA | 0.1 mA |
| Output format | Current sink | Current sink |
| Maximum load current (*1) | 100 mA/channel, 26.4 V | 100 mA/channel, 26.4 V |
| Withstanding voltage | Between output signal and system: 2 kV AC, For 1 minute. Between commons: 500 V AC, For 1 minute, common minus (-) side every 16-channel (*2) | Between output signal and system: 2 kV AC, For 1 minute. Between commons: 500 V AC, For 1 minute, common minus (-) side every 16-channel (*2) |
| Functions (Status output) | ON/OFF status output function | ON/OFF status output function |
| Functions (Pulse width output) | One-shot pulse width output function | One-shot pulse width output function |
| Functions (Time-proportioning output) | Time-proportioning ON/OFF | Time-proportioning ON/OFF |
| Output response time | 3 ms or less (for status output), 10 ms or less (for mixed status and pulse outputs) | 3 ms or less (for status output), 10 ms or less (for mixed status and pulse outputs) |
| Pulse width | 8 ms to 7200 s | 8 ms to 7200 s |
| Pulse width resolution | 8 ms, but ON/OFF delay of maximum 1 ms is added | 8 ms, but ON/OFF delay of maximum 1 ms is added |
| Maximum current consumption | 700 mA (5 V DC), 60 mA (external power supply) | 700 mA (5 V DC), 120 mA (external power supply) |
| Weight | Approx. 0.20 kg | Approx. 0.30 kg |
| External connection | Pressure clamp terminal, Dedicated cable (AKB331), MIL connector cable | Dedicated cable (AKB337), MIL connector cable |
