JESSINIE 10Pcs 3 x 4 Matrix Array Membrane Switch 69.2 * 76.9mm Keypad Keyboard 3x4 12 Key Matrix Array Membrane Switch Microcontroller Extended Keyboard 7Pin Dupont for Arduino

7P DuPont head, with a spacing of 2.54mm, can be inserted into the row of pins to connect the circuit; Remove the white sticker on the back of the keyboard and firmly stick it to the surface of the chassis. Suitable for external expansion of single-chip microcontrollers, which is beneficial for learning keyboard extensions outside of single-chip microcontrollers. Category: PET silver paste printing circuit Circuit level: 35V (DC), 100mA, 1W Standard square resistance: ? 50mQ/mouth/mil Contact resistance: 10-500Q (varies with lead length and material) Insulation impedance: 100MQ 100V Dielectric withstand voltage: 250VRms (50-60Hz1min) Contact jitter time: ? 5ms Operating pressure: Metal shrapnel type 220-350g Switch stroke: metal spring type 0.6-0.8mm Storage temperature:+15°C-35°C Storage humidity: 70% -90% Test temperature: -0 ° C -+60 ° C 16H Test humidity: 70% -90% Vibration: 20G's msx (10-200HZ, MIL-STD-202, M204, Condition B) Line thickness: ? 0.13MM Film key type within 500000 times Package including: 10Pcs 3 x 4 12 Key Membrane Switch