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IP (Ingress Protection) 
You are here: Support > IP (Ingress Protection) Explanation IP values Tyro Remotes
The IP value (also known as IP code, Ingress Protection Rating or International Protection Rating) on electrical appliances such as Tyro's industrial remote controls, classifies and rates the degree of protection provided against the intrusion of solid objects, dust, accidental contact and water in mechanical casings and with electrical enclosures.
The IP value usually consists of two digits. These digits (characteristic numerals) indicate conformity with the conditions summarized in the tables below.
The first digit indicates the level of protection that the enclosure provides against access to hazardous parts (eg electrical conductors, moving parts) and the ingress of solid foreign objects. The second digit indicates the level of protection that the enclosure provides against harmful ingress of water. The higher the value, the greater the protection.
Sometimes there is a third digit which indicates the level of protection against shocks or mechanical forces (impact energy).
Solids, first digit
1st digit Description
IP 0X no protection against contact and ingress of objects
IP 1X protected against contact with objects with a diameter larger than 50 mm
IP 2X protected against contact with objects with a diameter larger than 12.5 mm
IP 3X protected against contact with objects with a diameter larger than 2.5 mm (tools, thick wires, etc.)
IP 4X protected against contact with objects with a diameter larger than 1 mm (most wires, screws, etc.)
IP 5X protected against dust (ingress of dust is not entirely prevented, but it must not enter in sufficient quantity
to interfere with the satisfactory operation of the equipment)
IP 6X dust-proof (no ingress of dust; complete protection against contact)
Liquids, second digit
2nd digit Description
IP X0 no protection against contact and ingress of water
IP X1 protected against dripping water (vertically falling drops)
IP X2 protected against dripping water when tilted up to an angle of 15° from its normal position
IP X3 protected against spraying water (water falling as a spray at any angle up to 60° from the vertical)
IP X4 protected against splashing water (water splashing from any direction)
IP X5 protected against water jets (water projected by a nozzle (6.3mm) against enclosure from any direction)
IP X6 protected against powerfull water jets (water projected in powerful jets (12.5mm nozzle) against the
enclosure from any direction)
IP X7 protected against immersion up to 1m (30 minutes up to 1m of submersion)
IP X8 protected against immersion beyond 1m (continuous immersion in water)
Mechanical impact resistance, third digit
3d digit Description
IP XX0 no shock-absorption
IP XX1 0.225 Joules
IP XX2 0.375 Joules
IP XX3 0.500 Joules
IP XX4 1.500 Joules
IP XX5 2.000 Joules
IP XX6 4.000 Joules
IP XX7 6.000 Joules
IP XX8 8.000 Joules
IP XX9 10.000 Joules
Additional letters
The standard defines additional letters that can be appended to classify only the level of protection against acces to hazardous parts by persons:
Level Protection against access to hazardous parts with:
A Back of the hand
B Finger
C Tool
D Wire
Further letters can be appended to provide additional information related to the protection of the device:
Letter Description
H High-tension equipment
M Device moving during humidity test
S Device standing still during humidity test
W Weather conditions
[source: wikipedia]