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Key Features:

3.3V ~5V power supply, UART-TTL interface;
Tiny size, single-face laying components with stamp-hole 
Compliant with ISO14443A/B, ISO15693, ISO18092 Standard
Option version of ISO7816 T=1 standard;
Read/Write or Read UID only working mode 
Support to create standard Data file, Back-up Data file, Value file, Linear Record file, Cyclic Record file and Transaction MAC file) 
Support KEY Authenticate,get KEY Version, change KEY, etc;
Available to operate DESFire PICC level, Application ID create/delete/format, etc 
External LED and BUZ available (external driver circuit needed)

Technical Parameters:

Electrical Specification    
Power supply    DC 3.3V ~ 5V
Power consumption     Max current：<50mA,   Standby current: <1 mA
Operation frequency    13.56MHz 
Baudrate    9600~115200 bit/s ( default 9600bps)
Interface     UART TTL
Antenna    External, stamp hole
Reading range     Up to 4 cm ~ 10 cm( depends on antenna and cards)

Mechanical Specifications     
Dimension     25mmx16.5mmx2.8mm (LxWxH)
Weight     3g 
Material     FR-4, Blue 
Model    CHK301MT

Environmental Conditions     
Operation temperature    -20°C～ +80°C
Storage temperature    -40°C～ +85°C
Humidity     Relative humidity 5%～95%

Supported Standard/ Tags    
ISO14443 A     Read/write: 
MIFARE® Classic 1K /4K, MIFARE Ultralight®, MIFARE Ultralight® C, MIFARE® DESFire®EV1, MIFARE® Smart MX, MIFARE® Plus S / X, MIFARE® Pro X, NTAG 21x 

Read UID only: 
Read UID only of all other ISO14443A RFID tags 
ISO14443 B     SRI4K, SRIX4K, AT88RF020, 66CL160S, SR176 
ISO15693     EM4135, EM4043, EM4x33, EM4x35, I-Code SLI / SLIX, M24LR16/64, TI Tag-it HF-I, SRF55Vxx (my-d vicinity) 

SDK information     
Demo software     WINDOWS,  C# language 
Files     Comprotocol document 
API document
User Manual
Demo.exe

Note:  Other functions and details to be continued and upgrade