22/08/2026
HOPO PK311 Solar-Powered Smart Tilt Window System
PK311 brings smart control to mainstream inward-opening windows with a simple retrofit solution—replace the sash while keeping the existing frame, with no mains wiring, pre-wiring, or power outlet required.
• One-touch tilt operation
• Long-lasting battery life
• Security locking
• Smart control upgrade
• No need to remove or modify the existing frame
A simpler way to bring smart window control into existing homes.