KR900 Series

KR900 series is a high-security RFID reader, that supports 125KHz and 13.56MHz cards. This series features tamper-proof alarm functionality and offer two communication modes: Wiegand only or Wiegand & RS485. The RS485 communication protocol supports ZK-RS485, making it compatible with ZKTeco access control standalone devices and controllers. Also, Wiegand communication protocols also enable integration with third-party access control devices.

Available in six models, each reader offers distinct features including optional physical keypads and flexible authentication methods. All models support ID cards at 125kHz and IC cards at 13.56MHz, with a verification speed under 0.3 seconds and recognition distance of up to 4cm. They also feature a tamper switch, indicators, and an audio buzzer.

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Parameters

Model

KR901
KR901S
KR902
KR902S
KR903
KR904
Hardware

KR901: Physical Keypad: N/A; RFID Module: ID & IC; Tamper Switch: Support
KR901S: Physical Keypad: N/A; RFID Module: ID & IC; Tamper Switch: Support
KR902: Physical Keypad: 12keys; RFID Module: ID & IC; Tamper Switch: Support
KR902S: Physical Keypad: 12keys; RFID Module: ID & IC; Tamper Switch: Support
KR903: Physical Keypad: N/A; RFID Module: ID & IC; Tamper Switch: Support
KR904: Physical Keypad: 12keys; RFID Module: ID & IC; Tamper Switch: Support
Authentication Method

KR901: Card
KR901S: Card
KR902: Card / Password
KR902S: Card / Password
KR903: Card
KR904: Card / Password
Card Type

ID Card@125kHz & IC Card@13.56MHz (Standard)
Verification Method

＜0.3s @ Card
Recognition Distance

＜4cm @ Card
Communication

Wiegand output only (W34 / 66) Or RS485 (ZK-RS485) & Wiegand output (W34 / 66)
Note: Support Wiegand format switching (Default: W34)
Visual Indicator

LED Indicators Power On: Blue = Standby
Status: Green = Verification successful Red = Verification failed
Audio Indicator

Buzzer
Tamper Switch

Support
Operating Environment

Indoor / Outdoor
Power Supply

9V~12V DC
Working Temperature

-20℃ to 60℃
Working Humidity

10% - 90% RH (Non-condensing)
Dimension(L*W*H)

KR901: 111*44.5*21 mm
KR901S: 124*77*20.9 mm
KR902: 111*44.5*21.8 mm
KR902S: 124*77*20.9 mm
KR903: 86*86*16.15 mm
KR904: 86*86*16.15 mm
Gross Weight

KR901: 0.16 Kg
KR901S: 0.19 Kg
KR902: 0.16 Kg
KR902S: 0.19 Kg
KR903: 0.17 Kg
KR904: 0.17 Kg
Net Weight

KR901: 0.13 Kg
KR901S: 0.16 Kg
KR902: 0.13 Kg
KR902S: 0.16 Kg
KR903: 0.14 Kg
KR904: 0.14 Kg
Installation

KR901: Compatible with mullion mount or flat surface mounting
KR901S: Wall-mount (Compatible with Single gang box / Eurpean gang box) or flat surface mounting
KR902: Compatible with mullion mount or any flat surface mounting
KR902S: Wall-mount (Compatible with Single gang box / European gang box) or flat surface mounting
KR903: Wall-mount (Compatible with Asian gang box) or flat surface mounting
KR904: Wall-mount (Compatible with Asian gang box) or flat surface mounting
Housing Material

ABS Plastic
Ingress Protection Rating

IP65 (water & dust proof )
Certifications

ISO9001, ISO14001, CE, FCC, RoHS
Factory ID

KR901: AC03-KR91H-01
KR901S: AC03-KR91H-01
KR902: AC03-KR92H-01
KR902S: AC03-KR92H-01
KR903: AC03-KR93H-01
KR904: AC03-KR94H-01

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Update Time

PDF

ZK_KR900 Series User Manual_20250520

User Manual

847.17KB

2025-05-21

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PDF

ZK_KR900 Series_Qucik Start Guide_20250520

Quick Use Guide

1.75MB

2025-05-21

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PDF

KR900 Series_Datasheet_20250521

Datasheet

1.14MB

2025-05-21

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KR900 Series

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