# LI-200R Help Center
- [LI-200R Help Center](home.md): Product support landing page.
## Instruction Manual
- [Instruction Manual](manuals.md)
- [1. General Information](topics/200r-general-information.md)
- [2. Using the LI-200R](topics/200r-using.md)
- [3. Millivolt Adapters](topics/200r-mv-adaptor.md)
- [4. 2420 Light Sensor Amplifier](topics/200R-2420-amplifier.md)
- [5. Performance Characteristics](topics/200r-performance.md)
- [6. Care and Maintenance](topics/200r-maintenance.md)
- [7. Troubleshooting](topics/200r-troubleshooting.md)
- [A. Specifications](topics/200r-specifications.md)
## Documents
- [Documents](docs.md)
- [Calculate the LI-200 Calibration Multiplier](topics/faq002.md)
- [Amplifying the Output Signal of Radiation Sensors](Light-Sensors/topics/ttp003-amplifier.md)
- [Light Sensor Amplifier 2420](Light-Sensors/topics/2420-quick-start.md)
- [Converting Light Sensor Output to Voltage](Light-Sensors/topics/ttp004-voltage-reader.md)
- [Wireless Light Sensor Network with Particle Argon](Light-Sensors/topics/wireless-light-sensors-particle-argon-platform.md)
- [Wireless Light Sensor Network with NI](Light-Sensors/topics/wireless-sensor-networks-national-instruments.md)
- [How to Prevent Negative Readings](Light-Sensors/topics/negative-readings.md)
## Videos
- [Videos](Light-Sensors/videos.md)
- [Using Light Sensors with the LI-1500](LI-1500/videos/connect-to-li-1500.md)
## FAQs
- [FAQs](faqs.md)
## Factory Calibration
- [Factory Calibration](factory-calibration.md)