Datasheet

set of I/O interfaces, low power Wi-Fi with a Cryptochip for secure communication, and the ease of use of the
Arduino Software (IDE) for code development and programming.
All these features make this board the preferred choice for the emerging IoT battery-powered projects in a
compact form factor.
The USB port can be used to supply power (5V) to the board.The Arduino MKR1000 is able to run with or
without the Li-Po battery connected and has limited power consumption.
The MKR1000 Wifi module supports certificate SHA-256.
Warning: Unlike most Arduino & Genuino boards, the MKR1000 runs at 3.3V. The maximum voltage
that the I/O pins can tolerate is 3.3V. Applying voltages higher than 3.3V to any I/O pin could damage
the board. While output to 5V digital devices is possible, bidirectional communication with 5V
devices needs proper level shifting.