Detailed Answer
Service life reference: overall design life 5-10 years (Lider LD series); key life 10 million presses (500 presses/day = 55 years, but actually limited by environment); battery replacement every 2-5 years; sealing rings every 2-3 years; housing depends on environment (outdoor UV aging). Proper use + regular maintenance significantly extends life. Lider's 2-year trade-in covers the early failure period.
| Unit | 5-10 years |
| Battery | 2-5 years |
| Sealing rings | 2-3 years |
Note:Service life is affected by environment; good maintenance means a longer life.