100% brand new and high quality Input Voltage: DC5V Current: 150mA DO Output: TTL 0 and1 (0.1 and 5V) AO Output: 0.1 - 0.3V Crystals: 11.0592 MHZ Baud Rate: 9600 Module Features: High quality double panel design, with power supply indicators and TTL signal output instructions TTL output and AO analog signal output Four screw holes to facilitate positioning Rapid response recovery features Stability of long service life and reliable Size: 35*23*27mm/1.37*0.9*1.06"