EM-18 overview
This is a great little RFID Reader Module from Innovations, similar to the ID models (the difference being no silicone protection on the back). If you need an inexpensive way to get started with RFID, this is a great little module. Just power the module, and it will read any RFID card within range.
It will output the card's ID in a serial string, which can easily be read by any microcontroller. The spacing on the pins is 2.54 mm, which means the module will directly fit on a breadboard.
Key specifications
RFID frequency
The EM18 RFID Reader Module operates at a frequency of 125 kHz, which is a common frequency used for low-frequency RFID systems.
Reading range
The module typically has a reading range of up to several centimeters, depending on the specific RFID tags used and the environmental conditions.
Communication interface
The EM18 module supports a serial communication interface, often using the RS232 or TTL protocol, allowing for easy integration with microcontrollers or other electronic systems.
Power supply
The module requires a power supply of typically 5V DC and consumes low power, making it suitable for battery-powered or energy-efficient applications.
Datasheet
em18-rfid-reader-datasheet.pdf
EM-18 features
- 5V Supply
- 125kHz Read Frequency
- EM4001 64-bit RFID Tag Compatible
- 9600bps TTL and RS232 Output
- Magnetic Stripe Emulation Output
- 100mm Read Range
EM-18 pinout
| Pin | Description |
|---|---|
| VCC | Should be connected to a positive power source. |
| GND | Should be connected to the ground. |
| BUZZ | Should be connected to BUZZER |
| NC | No Connection |
| NC | No Connection |
| SEL | SEL=1 then o/p =RS232SEL=0then o/p=WEIGAND |
| TX | DATA is given out through TX of RS232 |
| DATA1 | WEIGAND interface DATA HIGH pin |
| DATA0 | WEIGAND interface DATA LOW pin |
EM-18 applications
- e-Payment
- e-Toll Road Pricing
- e-Ticketing for Events
- e-Ticketing for Public Transport
- Access Control
- PC Access
- Authentication
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