Apem capacitive touch sensors for underlay mounting self adhesive apem cg211ap0gs a capacitive touch sensor with a 12v dc green led that can be operated by the touch of a finger even while mounted under a non conductive front face such as glass or polycarbonate transforming the robust and easy to maintain inactive fascia into a touch sensitive control panel the adhesive disk attaches directly to the underside of the fascia so there are no panel cut outs and installation is easy and imm