产品特点：
- Switch-selectable Pull-high/Pull-low Resistors
- 15-step Switch-selectable Termination Resistor
- LED Indicator for Power/Termination
- DIN-Rail mountable
- Cost-effective
- Wide Operating Temperature Range: -25 °C ~ +75 °C
产品规格：
| RS-485 Interface | |||
| Pull-high/Pull-low Resistance | 1 kΩ, 10 kΩ, 100 kΩ, Switch-selectable | ||
| Termination Resistance | 15 Steps, 65 ~ 560 Ω | ||
| LED Indicators | |||
| Power | 1 Red LED as Power Indicator | ||
| Termination Resistor | 1 Green LED as Termination Indicator | ||
| EMS Protection | |||
| ESD (IEC 61000-4-2) | ±4 kV Contact for Each Terminal | ||
| Power Requirements | |||
| Reverse Polarity Protection | Yes | ||
| Powered from Terminal Block | Yes, 10 ~ 30 VDC | ||
| Consumption | 0.5 W Max. | ||
| Mechanical | |||
| Dimensions (W x L x H) | 52 mm x 87 mm x 27 mm | ||
| Installation | DIN-Rail Mounting | ||
| Environment | |||
| Operating Temperature | -25 ~ +75 °C | ||
| Storage Temperature | -40 ~ +85 °C | ||
| Humidity | 10 ~ 90% RH, Non-condensing | ||
