125Khz RFID Long Distance Reader Module, 40CM, UART
Built-in CPU decoding, direct serial port 9600 baud rate TTL level output card number, and optional Wiegand 26 output card number, very simple to use
Comes with buzzer and indicator output pins.
Single 3.5v to 6V power supply, connect the power supply, and the rest is the serial card receiving number!
The module size is 16 * 24MM, the volume is very small, and the antenna can be arbitrarily matched (supports self-winding)
Test EM standard thick card, the diameter of 45mm coil can reach 25CM reading distance! Use 97X97mm coil to reach 40CM!
Can read the card serial number of EM4100, 4001, TK4100, EM4305 and other 125K radio frequency cards.
The module uses universal 2.54mm pitch pins, which can be easily embedded in various systems.
Wide voltage power supply 3.5V to 6V, current is about 25mA
The card reading distance is about 40CM from the ID thick card. (Related to antenna and environment and card)
The quality of ordinary small dot video chips is 10 ~ 20CM. In the test video, I demonstrated a variety of cards of different grades.
Reading distance reference table (when using battery power, using switching power will affect the reading distance)
The distance for a small circular antenna with a diameter of 45mm is as follows
Nail point 11CM
The distance when using a square antenna with a side length of 97x97mm is as follows
Nail point is 14CM
The reading distance of small dots with a diameter of 2.5CM is 13CM
The reading distance of 2.5CM diameter dots is 20CM
3CM diameter dot reading distance is 16CM
3.5CM diameter dot reading distance is 24CM
Credit card size ordinary ID card is 18CM
Credit card size ordinary ID card is 25CM
Credit card size long distance thick card is 25CM
Credit card size long distance thick card is 41CM
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