The Viper probe droid, commonly referred to as the probot or Imperial probe droid, was a deep-space exploration and reconnaissance probe droid produced by Arakyd Industries
. The Viper model was based on the success of Galalloy Industries' early probe droids. The design of the probot also relied heavily on the work of Viper Sensor Intelligence Systems, a corporation acquired by Arakyd during the Clone Wars. Though they were used almost exclusively by the military, they were considered class two exploration droids. The lightly-armored Viper droid measured 1.6 meters in height with five manipulator arms extending from a central pod and several retractable sensor arms for gathering samples. High resolution receivers and sensors covered the domed head - including motion, acoustic, sonic, and seismic sensors, a radiation meter, magnetic imager, and holocamera. It had an atmosphere sensor capable of determining a planet's atmosphere class within one half-hour. It moved on a repulsorlift generator which was equipped to operate over any terrain. One of the arms was high-torque, and the droid was equipped with a floodlight on its head. In addition, when making transmissions, the probe droid emitted a audio encrypted imperial computer code set of an unknown serial number. Information was relayed back to its superiors via a high-frequency HoloNet transceiver. Its repulsorlift engines carried the droid across terrain at up to 40 kmh, while the arms gathered samples. Vipers were delivered to their targets through single-use custom built hyperspace pods. They were commonly deployed along the perimeters of key strategic star systems and hyperlanes to act as automated guardians. Typically, a Viper probe droid cost 14,500 credits. They were capable of being deployed from Galactic Empire Command centers.