1. rfid read module 2. 5 voltage 3. read distance : 10cm Product Description:LF 125KHZ EM reader module, active rfid reader module, RFID card module Voltage:DC5VElectrical current:<50MAInterface: Weigand26, RS232Operating frequency: 125KHZRead distance:10CMSize: 32*32*8mm LF 125KHZ EM reader module, active rfid reader module, RFID card module