arduino wifi module

module for Arduino​ 4 * 4 Matrix Keyboard Membrane Switch Microprocessor Control Panel

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: 10? ~ 500?
(Varies according to the lead lengths and different from those of the material used)
Insulation resistance: 100M? 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
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)

Factory Pictures

Competitive Advantage:

1. Convenient & Friendly Customer Service
2. Low Prices Direct From Factory Suppliers
3. Fast Delivery Around the World. 
4. High Quality With Global Standards. 
5. 1 Year Factory Warranty
6. Safe Shipping Way and Payment