I have checked with BCA regarding the Invisible Grilles, and they have informed me that Invisible Grilles are not regulated by BCA at all, and BCA advised me that homeowners should procure such devices from reputable sources and ensure that the product is able to perform its function satisfactorily.
I had requested BCA to test and investigate on the Invisible Grilles whether is safe for public usage, but BCA had declined my request to do so.
I am quite disappointed that BCA didn't accept my request to test the Invisible Grilles out, since so many homeowners have already installed the Invisible Grilles to protect the kids from falling out of the building, but at least I am aware that both BCA and HDB didn't regulate and test the Invisible Grille in the first place, and it's up to the public to determine whether which type of Invisible Grilles, either the Invisible Grilles or Diamond Grilles are able to perform its function satisfactorily, to keep their household members safe from falling out of the building
