This Breadboard power supply takes power from a 6 to 15V DC power supply and outputs a selectable 5V or 3.3V regulated voltage using a switch. This board can be easily inserted into a breadboard using a .1″ (2.54 mm) headers mounted on the bottom of the PCB.
Easy Relay1 Shield is a simple Arduino add-on commonly known as Shield. It gives your Arduino the ability to control a single electromechanical relay for switching larger loads and devices like AC or DC Motors, electromagnets, solenoids, and incandescent light bulbs.
GSM Booster is a pin-compatible replacement for Telit GM862-QUAD module while retaining the same form factor of this popular module. GSM Booster contains Telit’s new GL865-QUAD GSM module, MMCX GSM antenna connector, SIM card holder, etc.
It can be used on existing MikroElektronika development boards designed for the GM862.
The Relay4 Board is small-sized board with 4 Relays (each supports currents up to 16A). Also, it contains ULN2804 (high-current Darlington arrays) for relays driving and IDC10 connector for easier connecting with development or prototype board.