# LI-250A Help Center
- [LI-250A Help Center](home.md): Product support landing page.
## Instruction Manual
- [Instruction Manual](manuals.md)
- [1. Introduction](topics/using-the-li250a.md)
- [2. Compatible Sensors](topics/compatible-sensors.md)
- [3. Specifications](topics/specifications.md)
## Tech Tip: Light Meter Freezes
- [Tech Tip: Light Meter Freezes](topics/ttp023-meter-locks.md)
## FAQs
- [FAQs](faqs.md)