At a glance
- Power Supply
- DC 6-14V / max 70 mA
- Dimensions
- 116 × 16 × 75 mm (H×D×W)
- Verification Speed
- ≤ 200 ms
- Operating Temperature
- -20 °C to 65 °C
ZKTeco KR503 Large-Format RFID Card Reader (Wiegand or RS485)
₹3,476 to ₹3,973 Incl. GST
From ₹2,946 + 18% GST
At a glance
- Power Supply
- DC 6-14V / max 70 mA
- Dimensions
- 116 × 16 × 75 mm (H×D×W)
- Verification Speed
- ≤ 200 ms
- Operating Temperature
- -20 °C to 65 °C
Large card reader with a bigger target area, easier to use with gloves at a factory door or from a car window at a gate. 116 x 75 mm, reads 125 kHz or 13.56 MHz cards depending on version, with Wiegand or RS485 output.
Part of the ZKTeco KR500 Series. Compare all 4 models
- WarrantyManufacturer warranty under ZKTeco's terms: 1 year. Warranty claims
- DeliveryPrice, availability and delivery charges are confirmed in your quotation. Shipping and delivery
Overview
The ZKTeco KR503 is the large-format card reader in the KR500 family, with a 116 × 75 mm face that gives a bigger target area. That helps where people present a card without looking: a gloved hand at a factory door, or a driver reaching out of a car window at a gate. It is available with Wiegand output for third party panels or RS485 for ZKTeco InBio controllers, in 125 kHz (E) and 13.56 MHz (M) versions.
Is it right for you?
- It suits a gate or factory door where a large, easy target matters more than a slim body.
- It is a reader only and needs a controller behind it.
- Choose the RS485 version for InBio160, InBio260 and InBio460 controllers, or the Wiegand version for other panels.
- Where space is tight, the KR500 does the same job in a 44 mm mullion body.
Key features
- Reads 125 kHz ID cards (E versions) or 13.56 MHz MIFARE S50/S70 cards (M versions).
- Card read in 200 ms or less, at up to 10 cm on E versions and 5 cm on M versions.
- Wiegand output, 26-bit on E and 34-bit on M, or RS485 to InBio controllers.
- IP65 textured ABS and PC housing rated -20 to 65 °C.
- Red and green LEDs with a beeper, and external LED and buzzer control inputs.
- 16 mm deep and 120 g, so it still mounts flat on a wall or post. Runs on 6 to 14 V DC at up to 70 mA.
What else you need
- An access controller: InBio160, InBio260 or InBio460 for the RS485 version, or any panel with a Wiegand input for the Wiegand version.
- A 6 to 14 V DC feed, usually from the panel.
- A lock and an exit button for the door.
Installation
An access control installer should fit it. The reader mounts flat on a wall or post and wires to the controller over Wiegand or RS485 with its DC feed.
Before you buy
- Choose E or M to match your card frequency, and Wiegand or RS485 to match your controller.
- It is a reader only.
Technical specifications
Key facts
- How is it powered?
- DC 6-14V / max 70 mA
- Does it support RS-485?
- Yes
- Does it support Wiegand?
- YesOutput · 26-bit
- Can it be used outdoors?
- IP65Indoor/Outdoor
- Which documents are available?
- Datasheet, online specifications Open documents
- Can SecurityGearHub help with installation?
- Setup guidanceManuals, wiring guides and answers to setup questions. On-site work is arranged separately where available. Ask about installation
- Not stated by the manufacturer
- PoE, OSDP, box contents
RelatedSeriesZKTeco KR500 Series, 4 modelsSolutionOffice access controlSolutionPedestrian entrance controlGuideAccess control door setup checklistDocumentsAll ZKTeco documents
General
- Verification Speed
- ≤ 200 ms
- Recognition Distance
- Up to 10 cm (E models) / up to 5 cm (M models)
- Card Type
- ID card @ 125 kHz (E models) / IC card @ 13.56 MHz S50/S70 (M models)
- Access Control Interfaces
- Wiegand output: 26-bit default (E models), 34-bit default (M models); external LED and buzzer control inputs
- Alarm and Indicators
- Red and green LED indicators, built-in beeper
- Power Supply
- DC 6-14V / max 70 mA
Environment
- Operating Temperature
- -20 °C to 65 °C
- Operating Humidity
- 10% to 90% RH, non-condensing
Physical
- Material
- ABS+PC with textured finish
- Dimensions
- 116 × 16 × 75 mm (H×D×W)
- Weight
- 120 g
- Warranty
- Manufacturer warranty under ZKTeco's terms: 1 year. How claims work
Product attributes and shipping details
| Brand | ZKTeco |
|---|---|
| Verification | Card |
| Connectivity | Wiegand, RS-485 |
| IP Rating | IP65 |
| Environment | Indoor/Outdoor |
| Card Technology | 125 kHz EM, 13.56 MHz MIFARE |
| Output | Wiegand, Wiegand + RS485 |
Downloads
Documentation
- ZKTeco KR500 Series datasheetDatasheet · Family · d1agmp9y4cki1i.cloudfront.netDownload
- ZKTeco KR500 Series product pageOnline specifications · Family · zkteco.inView official page
Series documents can differ from your exact model. Report a wrong or missing file
Works with this product
Relevant accessories
- ZKTeco C3 Plus Series IP-Based Access Control Panel (1/2/4 Door)C3-100 PlusC3-200 PlusC3-400 PlusFrom ₹10,182Choose options
- From ₹20,615Choose options
- ₹1,730Add to cart
- ₹163Add to cart
Other models and upgrades
-
ZKTecoModel KR501Gang Box RFID Card Reader (IP65)
- Power Supply
- DC 6-14V / max 70 mA
- Verification Speed
- ≤ 200 ms
Price on requestKR500 series · 4 models -
ZKTecoModel KR502Mullion RFID Card Reader (Wiegand or RS485)
- Power Supply
- DC 6-14V / max 70 mA
- Verification Speed
- ≤ 200 ms
Price on requestKR500 series · 4 models -
ZKTecoModel KR500Slim Mullion RFID Card Reader (IP65)
- Power Supply
- DC 6-14V / max 70 mA
- Verification Speed
- ≤ 200 ms
- Reading Time
- ≤ 200ms
From ₹1,986 Incl. GST2 optionsChoose options This product has multiple variants. The options may be chosen on the product page
Questions about this product
Does the KR503 work on its own?
No. It is a reader and needs a controller behind it.
Which cards does it read?
E versions read 125 kHz ID cards at up to 10 cm; M versions read 13.56 MHz MIFARE S50/S70 cards at up to 5 cm.
Can it be fitted outdoors?
Yes. It is IP65 rated and works from -20 to 65 °C.
Which ZKTeco controllers does the RS485 version connect to?
InBio160, InBio260 and InBio460.
What power does it need?
6 to 14 V DC at up to 70 mA.
Ask about this modelSetup, compatibility, what is in the box
Answers are automated. Do not enter personal or account details.
Looking for an alternative?
We list alternatives only when we have checked they suit the same job. Compare other models in the category, or ask us to suggest one for your site.





