ASR2100H-D card reader (ID card, 125 kHz)
The ASR2100H-D is a card reader from Dahua that reads ID cards and passes the data on to an access controller or terminal via RS-485 or Wiegand. A card reader does not open a door itself: it is used with a controller that manages access. This model reads ID cards (125 kHz); for IC cards (13.56 MHz) there is the ASR2100H.
This reader and the variants
The readers in this series are otherwise identical (same housing, connection and mounting). They differ in the following:
| Type | Card type | Reading distance | Wiegand |
|---|---|---|---|
| ASR2100H | IC card | 0-8 cm | Wiegand 34 |
| ASR2100H-D (this one) | ID card | 0-6 cm | Wiegand 34 |
What this reader does
- Reads ID card contactlessly up to 0-6 cm
- Passes the card on to an access controller via Wiegand 34 or RS-485
- Buzzer and indicator LED confirm every read; tamper alarm when the unit is forced open
- Polycarbonate housing with tempered glass, IP66, suitable for indoor and outdoor use
- Surface mounting, at 12 volts; operates from -30 to +70 degrees
The details at a glance
| Reading | |
| Type | Card reader |
| Card type | ID card (125 kHz) |
| Reading distance | 0-6 cm |
| Connection | |
| Communication | RS-485 and Wiegand 34 (Wiegand 26 configurable) |
| Signalling | Buzzer and indicator LED |
| Security | Tamper alarm, watchdog, over- and undervoltage protection on the ports |
| Housing and power supply | |
| Protection | IP66 (indoor and outdoor) |
| Power supply | 12 VDC, 0.5 A |
| Consumption | Standby <=0.48 W, in operation <=1.2 W |
| Operating temperature | -30 to +70 degrees |
| Size | |
| Dimensions | 127 x 46 x 20 mm |
| Mounting | Surface-mount |
| Model code | DHI-ASR2100H-D |
The full specification can be found in the Dahua datasheet, under the Downloads tab.
Frequently asked questions
Does this reader open the door by itself?
No. A card reader reads the card and passes it on; the door is opened by the access controller or terminal that the reader is connected to. If you are looking for a device that controls the door by itself, see the terminals or controllers.
Where do I connect the reader?
On an access controller or terminal, via RS-485 or Wiegand. The reader uses Wiegand 34. Not sure whether it fits your controller? Call or email us with the type.
Which cards or tags work with this?
ID cards at 125 kHz. For IC cards (13.56 MHz, such as Mifare) there is the IC version in this range.
Can the reader be mounted outdoors?
Yes, the housing is IP66 and is made for indoor and outdoor use. For an outdoor installation, the manual calls for a tube of silicone sealant at the cable entry, so that no moisture gets behind the reader.
Which cable do I need?
A shielded cable between the reader and the controller, installed as fixed wiring; keep to the Wiegand or RS-485 distance that the controller allows. If you are unsure, call or email us.
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