... 2.Electronic used membrane switch 3.Used for fridge, air conditioning, car, etc. 4.3M attached. 5.Customized Membrane Keypad, Membrane Switch, Overlay, Graphic ... Mylar, Mylar, Mylar keyboardWith metal dome and LED.Matt finishing.Technical parameters ... temperature -40 ~ +55 Recycle life > 1,000,000 times Membrane Switch