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ZKTeco VEX-B21L Smart Video Outdoor Station

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The ZKTeco VEX-B21L video doorbell camera is an outdoor smart solution that integrates video intercom and supports IC cards and NFC, providing comprehensive access control.

The VEX-B21L runs on Linux operating system, supports authentication via IC cards, mobile NFC and PIN codes, ensuring user security. With a 2MP CMOS camera, 100° wide viewing angle and white LEDs, the VEX-B21L provides sharp images in all lighting conditions. The H.264 encoder enables efficient video transmission and storage.

The device supports two-way communication with visitors via an internal monitor, allowing identity verification before granting access. The ZKTeco VEX-B21L is also equipped with Wiegand, relay and RS-485 ports, providing flexible connectivity with other access control devices.

Description

Specifications:

Physical Parameters

Operating System Linux

RAM 64 MB

ROM 128 MB

Front Panel Aluminum

Keyboard Physical Keys (16 keys)

Power Supply PoE (IEEE802.3af ) or DC 12V/2A

Backup Power Supply 1.5 W

Rated Power 9 W

Camera 2MP, CMOS

Ethernet Port 1 x RJ45, 10/100Mbps auto-adjust

Door Control IC Card (13.56MHz) (Card Capacity: 60,000), PIN Code, NFC

RS485 Port 1

Relay Output Port 1

Exit Button 1

Door Sensor 1

Wiegand Port 1

Installation Method Recessed (on flat surface)

Application Environment Outdoor

Dimensions 380 * 158 * 55.7 (mm)

Operating Temperature -40°C to +55°C

Storage Temperature -40°C to +70°C

Operating Humidity 10% to 90% (non-condensing)

Certification (waterproof and dustproof) IP65

Card Reading Distance ≤ 3cm

Display Parameters

LCD 4.3” TFT

Resolution 480×272

Audio

Audio Codec G.711

Echo Cancellation Yes

DTMF RFC2833

Microphone Built-in Microphone

Speaker Built-in Speaker

Video

Video Codec H.264

Video Resolution 1280 x 720

Maximum Viewing Angle 100°(D)

Maximum Video Transmission Rate 720p – 30fps

Auxiliary Light LED (white)

Network Parameters

Protocols

ONVIF, SIP 2.0, UDP, TCP, RTP, RTSP, NTP, DNS, HTTP, DHCP, IPV4, ARP, ICMP

Product Packaging

Packaging
– VEX-B21L ((Power adapter not included))
– Flush Mounting Box
– Screw Set
– User Manual