| Uplink Communication Interface | TCP/IP |
| Downlink Communication Interface | Wiegand(W26/W34) |
| Accessible Card Reader | DS-K2801: 2 Card Readers (Wiegand Interface) DS-K2802: 4 Card Readers (Wiegand Interface) DS-K2804: 4 Card Readers (Wiegand Interface) |
| Built-in Clock | Yes |
| Working Temperature | -20°C to +65°C (-4°F to +149°F) |
| Power Dissipation(with Load) | DS-K2801: ≤50W DS-K2802: ≤100W DS-K2804: ≤100W |
| Power Dissipation (Without Load) | ≤3.5W |
| LED Indicator | Power Supply Status, Communication Status, Working Status |
| Dimensions (L×W×H) | 285mm × 237mm × 69mm (11.22" × 9.33" × 2.72") |
| Processor | 32-bit |
| Storage | Cards: 10,000 Access Control Events: 50,000 |
| Input Interface | DS-K2801: Door Sensor × 1, Exit Button × 1, Case Input×1 DS-K2802: Door Sensor × 2, Exit Button × 2, Case Input×2 DS-K2804: Door Sensor × 4, Exit Button × 4, Case Input×4 |
| Output Interface | DS-K2801: Lock Relay × 1, Alarm Relay × 1 DS-K2802: Lock Relay × 2, Alarm Relay × 2 DS-K2804: Lock Relay × 4, Alarm Relay × 4 |