It can be installed easily. DARP EXIT is manufactured and sold by double side strong adhesive tape and ready to install. The adhesive tape is resistable to uv lights and can be applied easily on exit windows. Double side strong tape will be long lasting on the installed surface. It has double security layer to prevent being stolen and being used on unnecessary moments. The first security layer is transparent cover on the device and second layer is optionally a security layer is seal wire or a self iluminated label on cover. The green label on the product is self iluminated beacuse of the phosphourus ingredient. This makes it remarkable in the dark and guide its position.
And Very Easy To Use.
1 - Remove the transparent protective cover
2 - Pull the "DARP EXIT" to backward
3 - And rush from the broken window out