20pcs KY-004 Electronic Switch Key Module AVR PIC MEGA2560 Breadboard

Specifications 1 Rating 50mA 12VDC 2 Contact Resistance 50m max initial 3 Insulation Resistance 100M minDC 250V 4 Dielectric Strength AC250V 50 60Hz for 1minute 5 Electrically Life 100 000cycles 6 Environment Temperature 25 to 105 7 Operating Force 180 230 20gf 8 Seal Temperature 250 280 Key switch module and a digital interface built in 13 LED build a simple circuit to produce key warning lamp 13 comes with digital interfaces of the LED theaccess number 3 button switch sensor interfaces when the key switch sensor senses a key signal LED lights otherwise off Package Included 20 x ForPIC AVR Key Switch Module KY 004 MEGA2560 Breadboard