Use for an early warning system for an incoming attack.
There are two modes to the scanner: scanning mode and engaged mode. Scanning mode will asses the base's threat level and will notify an ETA for an attack to start. It will also tell you on the amounts of enemies and energy used in the last engagement.
Engaged mode will tell the threat of the base, number of enemies, number killed, number of waves, and time till the next wave spawns.