IPXX represents dust rating and waterproof level respectively. The first X represents dust rating, and the second X represents waterproof grade
IP55 means preventing harmful dust accumulation and no influence of low-pressure injection at any angle
Dust rating is as follows:
0: no protection
1: prevent large solid invasion
2: prevent medium size solid intrusion
3: prevent small solid invasion
4: prevent solids entering greater than 1mm
5: to prevent harmful dust accumulation
6: completely prevent dust entering
Waterproof grade is as follows:
0: no protection
1: water droplets dripping into the shell has no effect
2: water or rain dripping from the 15 degree angle to the shell has no effect
3: water or rain dripping from the 60 degree angle to the shell has no effect
4: no splash at any angle
5: any angle low-pressure injection has no effect
6: high pressure jet water has no effect
7: resistant immersion in a short period of time (less than 15cm-1m, half an hour)
8: soak under certain pressure for a long time
