Arduino 4x4 Keypad Matrix Keypad Membrane Switch

This 4 * 4 matrix keyboard microcontroller keyboard is an empty PCB board with 16 keys easy to use and affordable external expansion. 

Features:

• Contact resistance of 500 (Ω).
• Insulation resistance 100M (Ω).
• Key Operating Force 150-200N.
• Rebound time 1 (ms).
• Life of 100 million (times).
• Operating Temperature 60 (℃).

Characteristics:

• Circuit Rating: 35V (DC), 100mA, 1W.
• Dielectric Strength: 250VRms (50 ~ 60Hz 1min).
• Electric shock jitter: ≤5ms.
• Life span: tactile type: ≥ one million times.

Properties:

• Operating pressure: Touch feeling: 170 ~ 397g (6 ~ 14oz).
• Switch travel: touch-type: 0.6 ~ 1.5mm.
• Operating temperature: -40 to +80.
• Storage temperature: -40 to +80.
• Temperature: from 40,90% to 95%, 240 hours.
• Vibration: 20G, max. (10 ~~ 200Hz, the Mil-SLD-202 M204.Condition B).