The Diver Recall System, cataloged under National Stock Number 4220-01-458-0270, is classified within Federal Supply Class 4220 (Marine Lifesaving and Diving Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Undersea Systems International, Inc. Dba Ocean Technology Systems. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4220-01-458-0270 |
| Primary Part Number | 900097-000 |
| Item Name | Diver Recall System |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Undersea Systems International, Inc. Dba Ocean Technology Systems |
| Status | ACTIVE |
| Functional Description | DESIGNED TO ALERT ALL DIVERS WITHIN HEARING RANGE WITH VOICE, SOLID OR INTERMITTENT TONES. PART NUMBER 900097-002 CAGE 46646 FOR SUBMARINE USE ONLY. |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| DRS100B-NLK01 | De Zeeman Pro (BEL) |
| DRS-100MODB | Undersea Systems International, Inc. Dba Ocean Technology Systems (USA) |
| 900097-000 PRIMARY | Undersea Systems International, Inc. Dba Ocean Technology Systems (USA) |
NSN 4220-01-458-0270 is a Diver Recall System, manufactured by Undersea Systems International, Inc. Dba Ocean Technology Systems, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-458-0270 has 3 manufacturer part numbers on file: DRS100B-NLK01 (De Zeeman Pro), DRS-100MODB (Undersea Systems International, Inc. Dba Ocean Technology Systems), 900097-000 (Undersea Systems International, Inc. Dba Ocean Technology Systems).
1 possible match (shared part number, not a government interchangeability claim): 5845-01-584-5601. Verify interchangeability with system specifications before substitution.
Key specifications for 900097-000: Special Features: HAS LISTENING MODE WHICH ALLOWS THE USER TO LISTEN TO MAN-MADE OR MARINE BIOLOGICAL NOISE; 2 RECEPTACLES ARE AVAILABLE TO ALLOW EITHER RECORDING UNDERWATER SOUND OR TRANSMITTING SOUND DIRECTLY INTO THE WATER; COMES WITH MAIN ELECTRONIC UNIT, HEAVY DUTY HOUSING, DELUXE TRANSDUCER (25 FT CABLE), HAND-HELD MICROPHONE, RECHARGEABLE BATTERIES, BATTERY CHARGER, AND TECHNICAL MANUAL FT; Functional Description: DESIGNED TO ALERT ALL DIVERS WITHIN HEARING RANGE WITH VOICE, SOLID OR INTERMITTENT TONES. PART NUMBER 900097-002 CAGE 46646 FOR SUBMARINE USE ONLY.; Part Name Assigned by Controlling Agency: DIVER RECALL HYDROPHONE SYSTEM; End Item Identification: DDS DIVER REC E/I FSCM 46646. 1 specification is documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 4220-01-458-0270 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.