SD-546AEwired&back light bike computer

Manual: http://www.sunding.com/uploads/SuoMingShu/SD-546AE-EN.pdf

1,  SPD   CURRENT SPEED
2, ODO   ODOMETER (0.001~99999km/m)
3, DST    TRIP DISTANCE
4, MXS   MAXIMUM SPEED
5,AVS    AVERAGE SPEED
6, TM    ELAPSED TIME
7, CLK   CLOCK (12H/24H)
8,TMP   TEMPERATURE(-10℃~70℃)
9,MIN PRM
10, MAX PRM
11, CAL(0~99999Kcal)
12, FAT(0~9999.9kg)
13, SCAN
14,  “+” “-” COMPARATOR
15, SETTING SPEED SCALE(km/h,m/h)
16, SETTING TYRE CIRCUMFERENCE :(0mm~9999mm)
17, SETTING THE LAST VALUE OF ODOMETER/ODO
18, FREEZE FRAME MEMORY 
19, SETTING THE RIDER’S WEIGHT
20, MAINTENANCE ALERT
21,LOW POWER REMINDING
22,BACK LIGHT
23,AUTO ON/OFF