I am not very sure if i have the skill to install it. One review suggests watching videos for installation. Could you please send a link to the installation video?
The product is equipped with an infrared sensor, when the door is closed, someone will return after activating the infrared door, children activate the infrared, and the infrared can be installed a little lower.
We do not sell parts separately. All our products have a 12 month warranty and if there is a problem with your purchase during the warranty period, we can send you a replacement part free of charge(Except for consumables, they need to be purchased by you yourself). Please click the following link to contact us: https://www.vevor.com.au/pages/contact-us.