Included is the AV-20-S (with internal backup battery), two 1/4″ quick connect fittings, mounting screws, and wire harness.  The harness has all interconnect pins pre-loaded with individually labeled wires.

OAT probe is NOT included and must be purchased separately.  The AV-20-S is compatible with the industry standard Davtron Analog probe, available through common component suppliers.  (If the OAT probe is not connected, OAT, DALT and TAS will not be displayed.)