Goa'uld scanning device

The Goa'uld scanning grenade was a type of technology used by the Goa'uld.

Overview
These silver hand held spherical devices were typically employed during exploration of new worlds with a Stargate. It was thrown through the Stargate whereupon it landed in its new environment. Once there, part of the device opened on the top and emitted a yellow scanning beam.


 * Presumably, this information was transmitted to the Kara kesh of the Goa'uld lord or to equipment used by the Jaffa.

History
Apophis had his Serpent Guard deploy one such scanning grenade through the Stargate to Earth where it landed inside the facility that would later become the SGC. The device activated and scanned a Human that examined it after which the scout team arrived and assaulted the defenders in the base.