This is a double-sided, 0.100" pitch, plated through-hole prototyping board. The dimensions are 72 x 47 mm (2.8 x 1.8 in) and the board comes with markers silkscreened to indicate position on the board. It also has built-in mounting holes for standoffs or mounting to an enclosure. It's very useful for adding your own circuits to an MCU board or doing a quick one-off prototype before you commit to making a zillion PCBs.
This is a 2 dBi omni-directional dipole antenna with an RP-SMA plug. Omni-directional antennas radiate equally well in all directions and are best used to spread a signal uniformly over some area. Unlike a directional or semi-directional antenna, an ideal omni-directional antenna does not favor any direction in particular. For a general purpose application, omni-directional antennas are usually the antenna of choice and directional or semi-directional antennas are used when the application and node locations are well defined. The dBi rating of an antenna specifies the amount of gain the antenna has in a particular direction. An antenna gain of 0dBi specifies an antenna that radiates all
This is a 5 dBi omni-directional dipole antenna with an RP-SMA plug. Omni-directional antennas radiate equally well in all directions and are best used to spread a signal uniformly over some area. Unlike a directional or semi-directional antenna, an ideal omni-directional antenna does not favor any direction in particular. For a general purpose application, omni-directional antennas are usually the antenna of choice and directional or semi-directional antennas are used when the application and node locations are well defined. The dBi rating of an antenna specifies the amount of gain the antenna has in a particular direction. An antenna gain of 0dBi specifies an antenna that radiates all