Class 1 probe

The Enterprise launches a Class-1 probe.

A Class-1 probe is a type of probe used by Starfleet ships in the late 24th century.

In 2365, the USS Enterprise-D launched a probe of this type with a full sensor platform to study a hole in space, created by Nagilum. (TNG: "Where Silence Has Lease")

Later that year on Drema IV, an Enterprise survey team suggested that harmonic vibrations emitted by class-1 probes fitted with resonators fired into the planet would shatter the planet's dilithium lattices, and thus alleviate the tectonic stresses that were tearing the planet apart. The plan was a success and the planet was saved from destruction. (TNG: "Pen Pals")

A class-1 probe, with sensor set to maximum scan and modified for planetary probe, was launched into the Romulan Neutral Zone to Nelvana III to scan for signs of a Romulan base on the planet. The probe went into orbit and began to pick up low level subspace radio emissions (TNG: "The Defector")

In 2366, the Enterprise launched a probe of this type to study a closing temporal anomaly before heading to Archer IV. (TNG: "Yesterday's Enterprise")

Based on dialogue in "Where Silence Has Lease", the class-1 probe is more advanced than a scanner probe. The same probe model was used to represent both probe types in the episode.

According to the Star Trek: The Next Generation Technical Manual (p. 116), the class-1 probe has a 200,000 km range and can travel at half the speed of light. The probe is powered by a vectored deuterium microfusion propulsion system, and can send telemetry on 12,000 channels at 12 megawatts. And is capable of scanning the full EM spectrum, subspace and interstellar chemistry.

Class-1 probes are one of many attributes you can buy for your custom starship in the game Star Trek: Starship Creator.