email:sales2 AT erfid com cn Specification ? Less than 0.2 second Response Speed ? Less than 0.5 seconds Proximity Time Distance ? 2-15cm Proximity Range ? Support EM-ID 125Khz and Mifare 1 Card (13.56 MHz Frequency) 10%-90% Ambient Humidity ? Built-in Antenna ? Built-in LED (Double Color LED) ? Built-in Loud Speaker (Buzzer) ? DC 12V Working Voltage,70mA Working Current ? 100 Meters Communication Distance ? Real Time Data Transfer ? Black Color ? PVC Case Material (Black Resin for Water-Proof Function) ? 123.5mm*55mm*22.5mm