Detailed Answer
In dusty environments (foundries, cement, flour), the remote must be IP6X fully dust-tight (LIDEER IP67), with an ePTFE vent membrane to prevent internal dust buildup and a sealed keypad design. Regular cleaning: air blow key gaps, check sealing rings. Dust can be conductive (metal dust) and corrosive (chemical dust), so the protection rating is a hard requirement. XINGJIA offers dust-hardened models.
| Hard requirement | IP6X |
| Design | Sealed + vent membrane |
| Cleaning | Regular air blow |
Note:Never open the housing to clean in metal-dust environments; risk of short circuit.