特性
- No contacts
- Semi-permanent life
- Noiseless
- High reliability
- Pin type
- Low power consumption
- Variety of sound options
应用
- Digital watches
- Electronic calculators
- Phones
- Microwaves
- Air conditioners
- Cars
- Toys
- Timers
- Alarm equipment
发布日期: 2016-07-21
| 更新日期: 2024-05-23

