Amprobe ULD-400-T Ultrasonic Leak Detector Transmitter

  • Generates an ultrasonic signal when working in unpressurized systems
  • Signal is readable by the ULD-400-R Receiver
  • Find air and water leaks in automobile windshields and windows, fluid and gas tanks, building windows, door, roofs and more
  • ULD-420 kit includes the ULD-400-T Transmitter


SKU: 5117524 Category:


The ULD-400-T Ultrasonic Leak Detector Transmitter can generate ultrasonic signals for locations where the gas/air leak does not have sufficient pressure to create an ultrasonic sound. The Transmitter will allow for ultrasonic detection by the Receiver at cracks and openings. The ULD-400-T is included in the ULD-420 kit.


Features ULD-400-T Transmitter
Signal Level Adjustment Yes
Frequency Range 40 kHz, bandwidth ±0.5 kHz
Power Supply 2 x 1.5 V AAA (LR03) alkaline batteries
Power Consumption (typical) 33 mA
Battery Life (typical) 60 hours (Alkaline)
Low battery indication Yes (Red LED)
Weight Approx. 0.335 lb (0.152 kg)
Dimensions 5.295 x 2.559 x 1.326 in
(137 x 65 x 33 mm)
APO function 60 minutes when in idle
Operating Temperature -4 °F to 122 °F (-20 °C to 50 °C)
Storage Temperature -4 °F to 158 °F (-20 °C to 70 °C)
Operating Humidity <80% RH
Pollution Degree 2
Protection IP40
Electromagnetic Compatibility (EMC) EN 61326-1
Korea (KCC): Class A Equipment (Industrial Broadcasting & Communication Equipment) [1]
[1] This product meets requirements for industrial (Class A) electromagnetic wave equipment and the seller or user should take notice of it. This equipment is intended for use in business environments and is not to be used in homes.


ULD-400 Series Overview

Find ultrasonic leaks easily with the ULD-400 Series Ultrasonic Leak Detectors.


ULD-400 Series De-pressurized Systems

Use the Transmitter to emit an ultrasonic sound readable by the Receiver in systems without significant pressure.

What's Included

  • ULD-400-T Transmitter
  • 2 x AAA Batteries


Datasheet »
Datasheet – Spanish »
User Manual »
Product Manual »


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