Package Included

- 1 x 12 Key 3x4 Keyboard

Description:

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

1.The electronic characteristics:
Circuit Rating: 35V (DC), 100mA, 1W
Contact resistance: 10Ω ~ 500Ω
(Varies according to the lead lengths and different from those of the material used)
Insulation resistance: 100MΩ 100V
Dielectric Strength: 250VRms (50 ~ 60Hz 1min)
Electric shock jitter: <5ms
Life span: tactile type: ≥ one million times

2.The mechanical properties
Operating pressure: Touch feeling: 170 ~ 397g (6 ~ 14oz)
Switch travel: touch-type: 0.6 ~ 1.5mm

3.The environment parameters
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)

Reference

• https://www.circuitbasics.com/how-to-set-up-a-keypad-on-an-arduino/