“IP” comes from standard IEC60529, it is short for “ ingress protection ” . IP code is a code system to indicate the degree of protection provided by an enclosure against access to hazardous parts, ingress of solid foreign object and water. The protection level is usually expressed by two numbers after IP, and the numbers are used to clarify the protection level. The first numbers (0 to 6) show the protection provided by an enclosure against access to hazardous parts or ingress of solid foreign object. The second numbers (0 to 8) show the protection provided by an enclosure against ingress of water. The IP code probes are used to verify the first numbers 1 to 4. The IP code probes includes test probe A, test probe B, test probe C, test probe 1 and test probe 2: 1). Probes A, B, C and D are access probes to verify protection of persons against access to hazardous liver parts or hazardous mechanical parts. The probes are simulating in a conventional manner a part of a person or a t...