Cookie Policy
Last updated: June 18, 2026
This Policy explains what cookies and similar technologies are used on the website wltt.asia (the "Site"), owned by WLTT Co., Ltd.
1. What Are Cookies
Cookies are small text files stored on your device when you visit a website. They help the site remember your actions and preferences, and are used to analyse traffic and advertising effectiveness.
2. Cookie Categories
| Category | Provider | Purpose | Retention |
|---|---|---|---|
| Essential | wltt.asia | Stores your cookie preference choice (wltt_consent). Cannot be disabled — required for the site to function. | 1 year |
| Analytics | Google Analytics (Google LLC) | Collects anonymous traffic statistics: number of visits, pages viewed, traffic sources, time on site. | Up to 14 months |
| Marketing | Meta Pixel (Meta Platforms) | Measures ad effectiveness on Facebook/Instagram, retargeting, conversion tracking (contact form submissions). | Up to 180 days |
3. Managing Cookies
On your first visit, a banner is displayed allowing you to:
• Accept all cookies.
• Reject non-essential (keep only essential cookies).
• Customise — select individual categories.
You can change your choice at any time by deleting the "wltt_consent" cookie in your browser settings — the banner will reappear on your next visit.
You can also configure or block cookies via your browser settings. Note that blocking some cookies may affect Site functionality.
4. Third-Party Services
Learn more about data collection by these services:
• Google Analytics: https://policies.google.com/privacy
• Meta Pixel: https://www.facebook.com/privacy/policy
5. Contact Us
If you have questions about cookies or data processing, contact us at [email protected] or via our contact form.
LED configurator addendum: October 30, 2026.
6. LED Configurator Authentication and Local Storage
Essential HttpOnly cookies led-cfg-session and led-calc-session confirm code authentication for up to 8 hours. They are not used for advertising. Signing out removes both browser sessions.
localStorage ledcfg:projects:v2 holds encrypted saves without readable project names or parameters. Saves remain until removed by the user or cleared with site data; there is no automatic sync. The old ledcfg:projects key is migrated after sign-in and removed only after a protected copy is successfully stored. The public version reads neither list.
ledcfg:lang stores language, ledcfg:pxmm stores display calibration and ledcfg:logout signals logout to other tabs. These local settings remain until site data is cleared. Blocking essential cookies or localStorage can prevent sign-in and saving. Make encrypted JSON backups before clearing data.