400mm 300MM 200MM Tuya Smart Window Chain Opener — Motorized Skylight & Casement Actuator

Motorized chain actuator for skylights and casement windows with Tuya smart capability. The chain is designed to bend in one direction: it extends as the window opens and retracts back into the unit when the window closes. Constructed with a double-layer chain for improved strength and resistance to breakage. Includes an overload protector and is built to perform open/close operations for 20000times. Engineered for reliable, powerful operation — Push/Pull force 400N and locking force reaches 2000N.You may also like AC110/220V Electric Dual-Hinge Swing Gate Opener — 400KG Per Leaf | Automatic Home & Industrial Operator.