Alfatron 20X-SD-TC



The ALF-20X-SD-TC is a dedicated smart camera solution leading in the international education information industry.  

The tracking camera features a built-in high-speed processor and advanced image processing and analytical algorithm, which allows it to track and detect teachers, students and blackboard-writing accurately and quickly. It fully satisfies all scenario demands by recorded broadcasting of teaching and remote interactive teaching. 

The tracking camera adopts an advanced ISP processing technique and algorithm, producing vivid images which feature balanced brightness, distinct layering, high definition and colour reducibility. 

The ALF-20X-SD-TC range are characterized by improved function, high performance, reliable operation, simple use and easy maintenance and POE powered.


Image Sensor 1/2.8inch high-quality CMOS sensor 
Effective Pixels 2,070,000 16: 9  
Video Signal  11080P60/50/30/25/59.94/29.971080I60/50/59.94720P60/50/30/25 /59.94/29.97


1920X1080P60/50/30/25;1280X720P60/50/30/25; 960X540P30;640X360P30;640X480P30;


Lens Optics Zoom 20X Optical Zoom f= 4.7~94mm
Visual Angle 2.9° (Narrow angle) ~55.4° (Wide angle) 
Aperture Coefficient F1.6 – F3.5
Digital Zoom 10X
Minimum Illumination 0.5Lux (F1.8, AGC ON)
DNR 2D & 3D Digit Noise Reduction 
White Balance Manual/auto/one-key white balance /3000K/ 4000K/5000K/6500K
Focus Auto/ Manual
Aperture Auto / Manual
Electronic Shutter Auto / Manual
WDR OFF/ Dynamic Grade Adjustment
Video Regulation Brightness, hue, saturation, contrast ratio, sharpness, Gamma
SNR >55dB

Panoramic Lens

Image Sensor  1/2.8inch high-quality CMOS sensor 
Effective Pixels 2,100,000
Lens Manual focus 
Output Port  SDI, LAN
Field Angle (D/H/V)  112°/82°/57.6°

Input/Output Port and Support Protocol

Ports SDI, LAN(POE), 2-channel 3.5mm linear audio input, RS232 (input)
Network port 100M internet access (10/100BASE-TX), support network VISCA control protocol
Network protocol  RTSP, RTMP, ONVIF, GB/T28181
Compression Image Code Stream  Dual-stream output 
Video Compression Format  H.265, H.264
Control Signal Port RS-232/485
Control Protocol VISCA/Pleco-D/Pelco-P; Baud rate: 115,200/9,600/


Audio Input Port Dual track 3.5mm linear input
Audio Compression Format AAC, MP3, PCM 
Power Port HEC3800 power socket (DC12V)

Pan/Tilt Parameters

Horizontal Rotation  -170°~+170°
Vertical Rotation  -30°~+90°
Horizontal Control Speed 0.1 ~100°/s
Vertical Control Speed 0.1~45°/s
Preset Speed Horizontal: 100°/s, vertical:45°/s
Preset Quantity  User can set 255 presets at most 

Other Parameters

Power Adapter Input AC110V-AC220V output DC12V/2.5A
Input Voltage  DC12V±10%
Input Current  1.5A (maximum) 
Power Consumption  18W (maximum)
Storage Temperature  -10℃~+60℃
Storage Humidity  20%~95%
Operating Temperature -10℃~+50℃
Operating Humidity 20%~80%
Dimension (WxHxD) 254mm X 144mm X 174mm
Weight (approx.) 1.50kg
Operating Environment Indoor
Remote Maintenance 

(network port)

Remote upgrade, restart and reset
Standard Accessories 12V/2.5A power, RS232 control line, remote control, operation manual, warranty card
Optional Accessories Installation support


User Manual

Technical Sheet


Software Download

Streaming Guide

Download Image