Sentry Drone

Sentry Drones are well-armed and armored security mechas. Although they have limited intelligence, they do very well at their tasks. When alerted, they lock down the room they are in and then attack the intruder. Their electronic warfare armor can scramble many types of electronic signals.

Samus encounters Sentry Drones where Space Pirate operations are, mainly in the Space Pirate base in Phendrana Drifts and in the Phazon Mines. When they see her, they let out a siren and lock down the room. They will scramble her visor and use heavy, anti-armor machine guns against her and may occasionally fire a red laser at her. Samus also encountered a Sentry Drone equipped with invisibility in the Phazon Mines when she was about to obtain Power Bombs.

Logbook Entry
"The Sentry Drone is a well-armed and armored security mechanoid. Sentry Drones have limited intelligence, but do their assigned tasks well. Being machines, they are susceptible to electrical attacks. When alerted, Drones initiate a security lockdown, then attempt to neutralize the intruder. Their electronic warfare suit can scramble Visor technology as well."

Variations
There are two variations.

Cloaked Drone (Not scannable)

Aqua Drone