... 2,Strong electrostatic resistance ability 3,application deve Optical Fingerprint Module&Sensor HF-EM405 Product brief ... is composed by software and hardware, such as optical fingerprint sensor, high-speed DSP processor, high ... interfaceCommunication interfaceSupport RS232RS232 communication baud rate4800BPS~115200BPS changeablePower supplyVoltage supply: DC3.8-7V ; working current: ≤90 ...