The SainSmart MEGA 2560 Board for Arduino:

This is a microcontroller board based on the ATmega2560. It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.

The SainSmart Sensor Shield V4.0 for Arduino:

It allows you to connect to various modules like sensors, servos, relays, buttons, potentiometers.

The SainSmart LCD Keypad Shield for Arduino:

It includes a 16x2 HD44780 White on Blue LCD module and a 5 push button keypad for menu selection and user interface programming. Fully assembled. On-line Arduino tutorial and example code. Compatible with Arduino Uno, Mega, Duemilanove. Uses digital pins 4 - 10, and analog pin 0.

The SainSmart Arduino XBee board for Arduino:

It allows to wireless communicate over a modified ZigBee protocol using the popular XBee module from Maxstream.

The module is easy to use, low power consumption, and the provision of critical data between devices reliable transmission. As the innovative design, XBee-PRO can be in the range 2-3 times beyond the standard ZigBee modules.The MaxStream's XBee (1 mW) Zigbee module is pin-compatible.

Package Content:
1 SainSmart MEGA 2560 Board
1 SainSmart Sensor Shield V4.0
1 SainSmart LCD Keypad shield
1 SainSmart XBee Shield