A reed switch is a sensor that closes a circuit in the presence of a magnetic field. Read sensors can be used in many applications that require non-contact on / off. However, because reed switches are fragile when used directly, this module makes the sensor easier to handle and install in a variety of applications.
This is a kind of passive electronic switching element with contacts, simple structure, small size and easy to control. It consists of a sealed glass envelope containing two elastic iron tongues and is filled with an inert gas called rhodium.
Radio frequency identification (RFID) uses radio frequency electromagnetic fields wirelessly and non-contactly to send data for the purpose of automatically identifying and tracking tags attached to objects. The tag contains information stored electronically. This EM18 RFID reader is a small and easy-to-use RFID reader module. If the antenna is built in, the only drawback is the 2mm pin spacing. Power on the module and lift the card to get a serial string output containing the card's unique ID. There is a TTL output.
Specifications and Features of EM-18 RFID Reader Module:
- Operating Voltage: 5V DC Supply
- Reading Distance: 6-10 cm.
- Read frequency: 125 kHz.
- EM4001 64 – bit RFID tag compatible.
- 9600bps ASCII output.
- Current : <50 mA
- Operating Frequency : 125 Khz
- Read Distance : 5 cm
- Compatible Tags : 125KHz EM4100 Tags
- Size : 32mm(length) * 32mm(width) * 8mm(height)
Application of EM-18 RFID Reader Module:
- Smart Access Control System.
- Card Based Entry System.
- Attendance System.
- DIY projects requiring need for RFID based System
