With small size， it is a card reader module which is compatible with EM 4100 125KHz ID cards. It is designed to be embedded onto reader or controller main board， to make the read card function.

Features:
Read 125KHz， EM 4100 or compatible RFID cards.
Embedded system.
Small in size.

Specifications:
Power: 5V 30mA
Interface: Wiegand26
Reader Range: Up to 10cm
Frequency: 125KHz
Supported Card: EM ID Card or EM 4100 Compatible RFID Cards
Operation Temperature: -10°C to 70°C
Operation Humidity: 5%-95% (no condensing)
Audio/Visual Indication: Green LED and Buzzer Signal Output
Dimension: 31 * 17 * 4mm / 1.22 * 0.67 * 0.16in
Package Weight: 7.5g / 0.26oz
Package Size: 8 * 6.5 * 3cm / 3.15 * 2.56 * 1.18in

Package List:
1 * Card reader Module