| Specifications | 
| 
 |  Interface : RS-485, 2 wires
 |  Power Dissipation : 1.2W (max.)
 | 
| 
 |  Speed(bps) : 1200, 2400, 4800, 9600, 19.2K, 38.4K, 115.2K
 |  Power Requirement : 10Vdc ~ 30Vdc
 | 
| 
 |  Status indicator : 8 input status LED displays
 | 
| 
 | Output | 
| 
 |  Channel : 4 relay output
 |  DC Contact Rating : 2A @30Vdc; 0.6A @110Vdc
 | 
| 
 |  SPST (form A) Channels : 2(N.O.)
 |  Relay On Time(Typical) : 3msec
 | 
| 
 |  SPDT (form C) Channels : 2(N.O./N.C.)
 |  Relay Off Time(Typical) : 2msec
 | 
| 
 |  Output Mode : Dry contact output
 |  Insulation resistance : 1000M ohms at 500Vdc
 | 
| 
 |  AC Contact Rating : 0.6A @125Vac; 0.3A @250Vac
 | 
| 
 | Digital Input | 
| 
 |  channel : 4 isolated input channels with common power
 |  Input Impedance : 3K ohms
 | 
| 
 |  Logical Level 0 : +1Vdc (max.)
 |  Isolation Voltage : 3,750Vrms
 | 
| 
 |  Logical Level 1 : +3.5Vdc ~ +24Vdc
 | 
| 
 | Input Counter | 
| 
 |  Counter Channel : 4 digital input
 |  Length : 16-bit(0~65535)
 | 
| 
 |  Frequency : 100Hz (max.)
 |