... :55.3*19.3*2.3cm3.Sample leadtime: 15days4.Fuction:time.date,temp display5,frame: caluminium alloy6,power:AC/Dcpower #8027 ... :A for SetB for Up,12 hours and 24-hour system switchingC for Down ,AlarmD for Exit Time Adjustment 1,In normal condition ... normal condition,Pls press UP for 3 seconds to switch 12 hours or 24 hours. 3,ON/OFF the hour noiseIn normal condition,pls ...