Here, the Vankesmart electric chain window opener has with 300mm Travel length. For openers with 500/400/600/700mm stretch length, contact the seller or search in our store.
1. The chain stretches out while the window is open and retracts to the opener inside after closing the window. Doesn’t allow opening/closing manually no matter powered on or off. Will stop when encountering a strong obstacle.
2. Double-layer chain, more durable and not easy to break off.
3. Equipped with an overload protector and can open and close for 20000times.
4. Locking force reaches 2000N. Push/Pull force 400/400N.
5. Working temperature: 20-75oC °C
6. Suit for multiple window types
7. Working speed 9mm/s
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