| Brand | Siemens |
| Model Code | ADD51xx |
| Communication Type | RS-485 |
| Universal / Wiegand Reader Interface | Yes |
| Electrical Specifications | Voltage: 12 ~ 32 VDC
Power Consumption: 25 W
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| Physical Specifications | Dimensions mm: 125 x 125 x 34
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| Environmental Specifications | Operating Temp oC: 0 ~ 50
Operating Humidity %: 10 ~ 90
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| Accessories | Door Interface |
| Model Info | The DRI provides a local interface between an Advanced Central Controller (ACC) and up to 2 card readers installed as entry and exit readers for a single door. This allows the DRI to receive information regarding the identity of a cardholder requesting entry or exit at a locked door and then send the identification data to the ACC for processing. In addition, the DRI has the intelligence to report the status of a door and unlock or lock the door as re-quired.
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