Detailed Answer
An ePTFE (expanded polytetrafluoroethylene) breathable membrane has a microporous structure that lets air/water vapor pass while blocking liquid water and dust. When a remote control housing is sealed, temperature differences between inside and outside cause condensation; the breathable membrane balances internal and external pressure, expels water vapor and prevents condensation. The LIDER LD series battery compartment and housing are equipped with ePTFE breathable membranes — key for cold storage and large temperature swings.
| Principle | Breathable, waterproof |
| Function | Prevents condensation / balances pressure |
| Scenarios | Cold storage / large temperature swings |
Note:A dirty, clogged membrane loses effectiveness; clean it regularly.