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521E Wire and Valve Locator

Cat No: 521E

UPC No: 810025412104

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Introducing the new 521E Wire and Valve Locator from Tempo®, a groundbreaking evolution of the revered 521A® trusted by technicians for over 25 years.

With feedback from hundreds of irrigation specialists just like you, we designed the 521ETM Wire and Valve Locator to be the new market leader in lightweight, ultra-durable locators. The 521E quickly and accurately finds buried wires, irrigation valve solenoids, and faults in control cables making it the ultimate troubleshooting and maintenance tool for traditional or modern two-wire irrigation systems.

The 521E features a new digital 45-degree angle indicator which helps technicians produce accurate depth measurements.

The ergonomically balanced receiver now has a carbon-fiber-reinforced antenna pole for extra strength and durability.

The receiver and transmitter have been modernized with LCD displays making it easy to read results even in direct sunlight.

The ruggedized transmitter is now removable from the carry case.


The 521E is today’s “must have” tool for irrigation technicians. We think the 521E is the best irrigation locator yet, and think you will too!

521E Wire and Valve Locator521E Wire and Valve Locator521E Wire and Valve Locator521E Wire and Valve Locator521E Wire and Valve Locator521E Wire and Valve Locator

Troubleshoot and maintain electrically controlled traditional and 2-wire sprinkler irrigation systems with the 521E featuring:

  • A lightweight, ergonomically balanced receiver with a carbon-fiber-reinforced antenna pole.
  • Receiver and transmitter have a modern, digital display, readable in direct sunlight.
  • A new digital 45-degree angle indicator for assisted precision wire depth triangulation.
  • Ruggedized, high-power, removable transmitter offers extended long range and allows use on higher resistance wire paths.
  • Adjustable transmit power with real-time audio responsiveness for best signal and maximum performance.
  • Receiver provides adjustable loudspeaker or headset audio, and visual indications of signal strength.
  • Valve solenoid hotspot signal makes pinpointing valves easy.
  • Rugged headphones block ambient noise.
  • Includes transmitter, receiver, headset, ground stake, and slim-line carry case.
  • Battery-operated.
  • 1-year warranty.
CAT NOITEM NOUPCDescriptionIMAGE
521E
55505271
810025412104
LOCATOR, VALVE (521E)
521 E CUT OUT SHADO Wsm
521E-R
55505272
810025412036
RECEIVER, 521E
521 E RECIEVER WEB
521E-T
55505273
810025412012
TRANSMITTER, 521E
521 E Transmitter WEB
521E-C
55505274
810025412005
CARRY CASE, 521E
521 E Case WEB
Attribute Name Attribute Value
Transmitter Frequency: 1750 Hz
Transmitter Power: 2500 mW into 1 kohm
Case Dimensions: 28” x 12.6” x 4.1” (711mm x 321mm x 104mm)
Weight: 10.25 lb complete (4.65 kg)
Battery: 6 x D cells / 4 x AA cells (alkaline recommended)
Battery Life: Transmitter: 50 hours nominal / Receiver: 50 hours nominal
Automatic Shut-off: 1.5 hours