Radiodetection S18 Sonde (33 kHz)

The Radiodetection S18 Sonde (33 kHz) with Extended Aluminum End Cap (for two AA batteries – included) is a compact, self-contained transmitter designed for locating non-metallic underground utilities such as pipes and ducts. Operating at 33 kHz, it produces a strong, consistent signal that can typically be traced to depths of up to 14.5 ft (4.5 m) using compatible Radiodetection locators.

Measuring 0.70 in × 3.22 in (18 mm × 82 mm), this battery-operated sonde is well suited for use with a Flexrod or similar push rods. Its small diameter makes it ideal for narrow pipes, ducts, and confined spaces where precision locating is required.

Part Number: 10/SONDE-S18B-33

Key Features

• 33 kHz transmit frequency
• Locatable to 14.5 ft (4.5 m)
• Compact, self-contained, battery-operated design
• Size: 0.70 in × 3.22 in (18 mm × 82 mm)
• Compatible with Flexrod or similar push rods
• Strong signal for reliable locating of small-diameter, non-metallic utilities

Ideal For

Utility locating professionals, telecom and water contractors, and municipal crews tracing non-conductive pipes, ducts, and conduits in narrow, restricted, or shallow environments.