DHSolar vs JustCleaner

The visualization equipment monitoring platform independently developed by Dahai New Energy integrates photovoltaic data to help users achieve remote monitoring of power plants. Users can register their own accounts and manage power plants through Dahai authorization.

JustCleaner plays a low-frequency pulsing tone through your speaker. Each pulse is an attempt to push trapped water out of the grille. That is all it does — and the app is careful to say so. No phone has a sensor that can see water inside a speaker, so JustCleaner never claims to detect it and never tells you the water is gone. It plays the tone; you listen and decide. THE CYCLE • Thirty seconds, one tap. Gentle, Standard and Extended. • A 118–205 Hz sweep in pulses, not a continuous drone. The frequency is not arbitrary: a plug of water in a port moves roughly with 1/f², so a higher tone does less, not more. • Vibration in step with the tone, so you can feel the cycle running without watching the screen. • The cycle stops itself if you plug in headphones. The tone only makes sense through the phone's own speaker. TOOLS • Wet device? What to do — what to avoid after a spill, including why rice does not help. • Display check — full-screen colours for stuck pixels. • Sound level — a microphone meter, uncalibrated and labelled as such. • Speaker check — compare two measurements of your own speaker. PRO — a one-time purchase, not a subscription • Dust & Sand Remover — a different band (0.5–2 kHz) aimed at loose particles sitting on the grille. It cannot pull out dust packed into the mesh, and the screen says so. • SOS Beacon — the Morse SOS pattern through the speaker and the camera flash. It signals; it does not call anyone. • Earpiece output — send the tone to the top speaker instead. • Strong vibration — a continuous haptic pattern alongside the tone. • Apple Watch app — run the cycle from your wrist, with no phone nearby. • Start from the Lock Screen, Control Centre or the Action Button. • Alternate app icons. Eighteen languages, with full right-to-left layout for Arabic. JustCleaner cannot detect water, repair liquid damage, or tell you whether your speaker is clear. If a phone has been in salt water or a sugary drink, rinse the outside briefly with fresh water first and consider a service check — a tone will not shift a residue.