Metal Reader Card Reader For Home Improvement 12VDC/40mA Metal Waterproof 125KHz

Frequency: 125KHz. 1 x Mini 125KHZ EM4100 Reader. Not Have Bell for response,it with for response,power connect red on, when read card red flash. Card Type: ID /EM4100. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.