Key Board Mini Wireless With Drag Pad soldering use a high-speed USB communication

use a high-speed USB communication

1uF 2200pF

there is a sim card jack and a holder for a 3V CR1220 battery for the RTC (real-time clock)

SIM900 GSM GPRS shield is based on a chip of SIM900 from SIMCOM and is compatible with Arduino and its clones

5pcs Red LED

Key Board Mini Wireless With Drag Pad soldering use a high-speed USB communication3 in 1 MultiFunction 2. 4GHz Mini Wireless QWERTY keyboard, TouchPad combo, LED backlit with USB interface adapter. Perfect combo: 92 keys Wireless QWERTY Keyboard + Touchpad which support multi finger functions, A single finger click as left mouse function, two finger click as the right mouse function, double finger drag as the rolling screen Built in high sensitive smart touchpad with 360 degree flip design.