keypad 4×4
- Ultra-thin design & adhesive backing provides easy integration to any project
- Excellent price-performance ratio
- Easy communication with any microcontroller
- 5 pins 2.54mm pitch connector, 4×4 type 16 keys.
- Sticker can peel off for adhesive mounting.
TP4056 - 18650 lithium battery charging board 1A with protection
Air quality sensor gas sensor MQ-135
Dip Switch 2P 












