4 x 3 Matrix Array 12 Key Membrane Switch Keypad Keyboard for Arduino/AVR/PI?C Pad Size: 7.5*6.5CM Cable Length: 85mm Connector: Dupont 7 pins, 0.1" (2.54mm) Pitch Mount Style: Self-Adherence Max. Circuit Rating: 35VDC, 100mA Insulation Spec.: 100M Ohm, 100V Dielectric Withstand: 250VRms (60Hz, 1min) Contact Bounce: <=5ms Operation Temperature: -20 to +40 ˇăC Package Included: 1 x 4 x 3 Matrix Array 12 Key Membrane Switch Keypad Keyboard for Arduino/AVR/PI?C