B&G 000-11852-001 Airmar IDST800L 235kHz Long Stem Sensor

B&G Airmar IDST800L 235kHz Long-Stem Retractable Smart Sensor (000-11852-001)

The B&G Airmar IDST800L (Part Number: 000-11852-001) is a high-precision, low-profile Bronze Thru-Hull Smart™ Multisensor designed to deliver real-time Depth, Speed-Through-Water (STW), and Fast-Response Water Temperature data across an NMEA 2000® network. Built using Airmar’s extended-stem B-122 bronze housing, the "L" (Long Stem) configuration provides extra thread length to accommodate thick fiberglass, wood, or cored hulls with high deadrise angles.

Operating at an off-frequency 235 kHz, the IDST800L eliminates mutual acoustic interference with standard 50/200 kHz fishfinder transducers on the same vessel. As a self-contained "Smart Sensor," digital signal processing (DSP) occurs directly inside the transducer housing, transmitting calculated NMEA 2000 PGNs straight to B&G Triton2, Nemesis, and Vulcan/Zeus navigation displays. The unit features a retractable insert with an internal self-closing water valve for safe paddlewheel maintenance while afloat.

Key Features

• 3-in-1 Smart Multisensor: Measures Depth, Speed-Through-Water, and Water Temperature in a single thru-hull fitting.

• 235 kHz Anti-Interference Frequency: Prevents cross-talk with 50/200 kHz depth sounders or fishfinder transducers.

• Extended B-122 Long Stem Bronze Housing: Extra thread height allows installation through thick wood hulls, composite cored structures, or deep fairing blocks.

• Retractable Core with Water Valve: Allows quick extraction of the paddlewheel insert for cleaning without significant water ingress.

• NMEA 2000® Micro-C Connectivity: Direct plug-and-play NMEA 2000 networking with an attached 6 m (20 ft) drop cable.