Helder 2 ankle protocol — 15–20 cm · 15 min per session · Body mode
DeviceHelder 2 (AriHelder)
Distance15–20 cm
ModeBody mode · full power
Duration15 min per session
FrequencyDaily or 5× / week
Wavelengths631 nm red · 856 nm NIR
✓ OHSP Verified
Verified output: 10.47W total — NIR 9,242 mW + Red 1,228 mW.
Independent integrating sphere measurement →
How to position the device
Attach to the arm mount. Position 15–20cm from the ankle. For Achilles tendon, target the posterior ankle. For ankle joint, medial or lateral positioning.
1
Set up the device
Attach to the arm mount. Position 15–20cm from the ankle. For Achilles tendon, target the posterior ankle. For ankle joint, medial or lateral positioning.
2
Select body mode
Set to body mode, full power. Verified output: 10.47W total — NIR 9,242mW (856nm) + Red 1,228mW (631nm).
3
Run the session
Hold position for 15 minutes. Wear eye protection. Repeat daily or 5 times per week.
Session guidance
The ankle is a smaller target. 15cm working distance increases irradiance for this compact joint. For acute ankle sprains, begin sessions within 48–72 hours and use twice-daily sessions.
Safety & contraindications
Do not use over open wounds or in the acute phase of severe injury without practitioner guidance. Always wear eye protection.
Frequently asked questions
15–20cm. For the ankle, 15cm is appropriate — it is a smaller target than the knee or hip.
15 minutes per session in body mode.
Daily or 5 times per week. For acute sprains, twice daily in the first week is within normal range.
10.47W total — OHSP verified. NIR (856nm): 9,242mW. Red (631nm): 1,228mW.