| Photobiomodulation target | Red and near-infrared light delivered to the skin at a controlled irradiance and dose | A pod should be assessed by measurable light output rather than appearance, lamp count, or marketing claims. | Request independent irradiance measurements at the user position. |
| Common red-light wavelength band | Approximately 630–660 nm | Red light is commonly selected for superficial skin-focused photobiomodulation applications. | Confirm the peak wavelength and spectral tolerance in the technical specification. |
| Common near-infrared wavelength band | Approximately 810–850 nm | Near-infrared light is often included when broader tissue penetration is desired. | Check whether the stated output is optical irradiance and not electrical power. |
| Suggested planning dose | 4–10 J/cm² per session as a practical planning range | Dose provides a more useful comparison than session duration alone. | This is a general reference range, not a universal clinical prescription. |
| Dose calculation | Dose (J/cm²) = Irradiance (W/cm²) × Time (seconds) | The formula allows buyers to compare different pod outputs and treatment timers. | Use irradiance in W/cm²; 100 mW/cm² equals 0.100 W/cm². |
| Treatment example at 25 mW/cm² | 4 J/cm² = about 160 seconds; 10 J/cm² = about 400 seconds | Useful for lower-output settings and conservative starting protocols. | Actual time changes if the measured irradiance varies across the pod. |
| Treatment example at 50 mW/cm² | 4 J/cm² = about 80 seconds; 10 J/cm² = about 200 seconds | A convenient reference for moderate-output full-body equipment. | Confirm whether the value is measured at the recommended user distance. |
| Treatment example at 100 mW/cm² | 4 J/cm² = about 40 seconds; 10 J/cm² = about 100 seconds | Shows why high-output devices may require shorter sessions. | Higher output does not automatically mean better results; avoid assuming linear clinical benefit. |
| Irradiance uniformity | Compare minimum, maximum, and average irradiance across the treatment area | Uneven output can produce different doses on different body regions. | Ask for a measurement grid or test report covering the full user position. |
| Session frequency | Begin with the equipment instructions and a conservative schedule; adjust only after observing tolerance | Photobiomodulation responses can depend on dose, frequency, body area, and individual factors. | Do not increase both dose and frequency at the same time. |
| Cooling and thermal management | Integrated ventilation, temperature monitoring, and user-accessible controls | Comfort and heat management are important during full-body sessions. | Separate photobiomodulation light output from heat-based claims. |
| Eye protection | Provide suitable eye protection whenever required by the equipment instructions or exposure assessment | Bright visible red light can be uncomfortable, and near-infrared light may not be visibly apparent. | Follow the device-specific safety instructions and avoid staring directly at LED sources. |
| Electrical and regulatory documentation | Input voltage, frequency, power rating, user manual, risk assessment, and applicable market documentation | Requirements differ between markets, including the European Union, United States, United Kingdom, Canada, and Australia. | Verify local import, electrical, EMC, optical-safety, and medical-device requirements before purchase. |
| User safety screening | Review photosensitizing medicines, light-sensitive conditions, eye conditions, pregnancy-related concerns, and implanted-device considerations with a qualified professional | Individual risks may not be visible from product specifications. | Stop use if significant discomfort, skin irritation, or unexpected symptoms occur and seek professional advice. |