We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
RIDGID Underground Utility Transmitter, 0.128 kHz, 21903 - Underground Utility Transmitters
RIDGIDUnderground Utility Transmitters

RIDGID Underground Utility Transmitter, 0.128 kHz, 21903

The RIDGID Utility Line Signal Transmitter (MPN 21903) is an underground utility transmitter designed for locating buried lines. It operates at a frequency of 0.128 kHz and carries a CAT Safety Rating of Not Rated.

SKU 3G-OTH-170513

Brand
RIDGID
Item
Underground Utility Transmitter, 0.128 kHz, 21903
Part Number
21903
Category
Underground Utility Transmitters
Available to Order
Also known as:21903RIDGID
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

RIDGID
Manufacturer Part Number
21903
CAT Safety Rating
Not Rated
Operating Frequency
0.128 kHz

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

RIDGID Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The RIDGID Utility Line Signal Transmitter (MPN 21903) is an underground utility transmitter designed for locating buried lines. It operates at a frequency of 0.128 kHz and carries a CAT Safety Rating of Not Rated.

Frequently Asked Questions

What is the RIDGID Utility Line Signal Transmitter used for?

The RIDGID Utility Line Signal Transmitter (MPN 21903) is used to locate buried utility lines by applying a 0.128 kHz signal. It helps plant engineers and maintenance teams identify underground pipes and cables before excavation, reducing the risk of damage during construction or repair work.

What are the specifications of the RIDGID 21903 transmitter?

The RIDGID Utility Line Signal Transmitter (MPN 21903) operates at a frequency of 0.128 kHz. It has a CAT Safety Rating of Not Rated. This unit is designed for underground utility locating and is supplied by 3G Electric as part of their industrial equipment sourcing across multiple departments.

Where to buy the RIDGID 21903 utility transmitter worldwide?

3G Electric supplies the RIDGID Utility Line Signal Transmitter (MPN 21903) to customers worldwide. As a global industrial solutions provider, 3G Electric handles full logistics, customs clearance, and delivery for international orders, ensuring the transmitter reaches your facility reliably.

How to select the right frequency for a RIDGID utility transmitter?

Selecting the correct frequency, such as the 0.128 kHz on the RIDGID 21903, depends on soil conditions and line depth. Lower frequencies like 0.128 kHz travel farther and are ideal for long-distance tracing of buried metallic pipes. Consult the transmitter manual or 3G Electric for application guidance.

Used in

Common applications for RIDGID
Pipe fabrication shops — RIDGID 1224 Series threading machine with die head 26152 for NPT threading on 2-1/2 in to 4 in pipe.
Drain maintenance services — RIDGID SeeSnake CS65XR inspection camera for 100 ft drain line visual inspection.
Plumbing repair — RIDGID K9-12 cordless drain cleaner for clearing blockages in 1-1/4 in to 2 in pipes.
Industrial piping support — RIDGID V-Head pipe stand 22168 for holding pipe during threading or cutting operations.
Tube bending for HVAC — RIDGID 38048 lever bender for 1/2 in stainless steel tubing in gas or water lines.
Threading die replacement — RIDGID 38105 dies for rethreading pipe nipples on-site using RIDGID threading equipment.
Not sure this is the right part? Photo-identify it

RIDGID Products

3G Electric supplies RIDGID underground utility transmitters. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from RIDGID

View all RIDGID parts

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first