Function description: Onlay reader 9-15V single power supply; Two in one; Support weigand26, RS485, ABA and RS485interfaces or other format protocol optional. Features: High reliable design, prevent damage from wrongly tying the power source and the data line, high read sensitivity and good uniformity, the transmitting range is far, can allocate wide voltage format, support custom-made protocol new contour, high reliable design and multi-option for colors, such as black, white and gray.