---
product_id: 168186384
title: "HiLetgo 20pcs TCT40-16R/T 16mm Split Ultrasonic Sensor Ultrasonic Transceiver Probe 10 Transmitters + 10 Receivers T+R Ultrasonic Sensor Set"
brand: "hiletgo"
price: "R329"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Hi Letgo"
url: https://www.desertcart.co.za/products/168186384-hiletgo-20pcs-tct40-16r-t-16mm-split-ultrasonic-sensor-ultrasonic
store_origin: ZA
region: South Africa
---

# ≥-75dB receiver sensitivity 40KHz nominal frequency ≥110dB emission sound pressure HiLetgo 20pcs TCT40-16R/T 16mm Split Ultrasonic Sensor Ultrasonic Transceiver Probe 10 Transmitters + 10 Receivers T+R Ultrasonic Sensor Set

**Brand:** hiletgo
**Price:** R329
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your sensing game with HiLetgo’s precision ultrasonic duo!

## Quick Answers

- **What is this?** HiLetgo 20pcs TCT40-16R/T 16mm Split Ultrasonic Sensor Ultrasonic Transceiver Probe 10 Transmitters + 10 Receivers T+R Ultrasonic Sensor Set by hiletgo
- **How much does it cost?** R329 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/168186384-hiletgo-20pcs-tct40-16r-t-16mm-split-ultrasonic-sensor-ultrasonic)

## Best For

- hiletgo enthusiasts

## Why This Product

- Trusted hiletgo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Complete Transceiver Set:** Includes 10 transmitters + 10 receivers for seamless integration in your projects
- • **Precision 40KHz Frequency:** Engineered for ultra-accurate ultrasonic sensing at industry-standard frequency
- • **High-Impact Sound Emission:** Delivers powerful ≥110dB sound pressure for reliable signal transmission
- • **Versatile Industrial Grade:** Trusted by pros for robotics, proximity sensing, and innovative tech builds
- • **Sensitive Receiver Performance:** Captures ultrasonic signals with ≥-75dB sensitivity for crisp detection

## Overview

The HiLetgo 20pcs TCT40-16R/T Ultrasonic Sensor Set features 10 transmitters and 10 receivers operating at a precise 40KHz frequency. With a robust emission sound pressure of ≥110dB and receiver sensitivity of ≥-75dB, this 16mm split transceiver kit is ideal for advanced proximity sensing, robotics, and industrial applications. Compact and reliable, it offers professional-grade performance to power your next innovative project.

## Description

HiLetgo 10 Pairs 16mm Split Ultrasonic Transceiver Ultrasonic Sensor Probe Description: Nominal frequency (KHz): 40KHz Emission sound pressure at10V (0dB = 0.02mPa): ≥110dB Receiver sensitivity at40KHz (0dB = V / ubar): ≥-75dB Capacitance at1KHz, <1V (PF): 1800 ± 30% The part with T is the Transmitter; the part with R is Receiver. Package Includes: 10* Ultrasonic Transmitters Probes 10* Ultrasonic Receivers Probes

Review: Works as expected, and at a good price - Nice transducer. Works as specified. I use them in robotics, and The last application was proximity sensing to a Magic Book for Halloween. The closer someone got to the book, the brighter the pentagram on the book's cover would light. The price is very nice for this sensor.
Review: Worked good for me. I'm not sure there is any real difference between the "T" and "R" - I used one of these for the build of a directional ultrasonic detector to help find electrical arcs... The pickup seems to be exactly 40KHz as advertised, and my mixer ( mixed with 39Khz oscillator) circuit worked well, down-converting that to an audible 1Khz signal that can be heard in my headphones. I ran these across my component analyzer and saw no difference between the ones marked "R" (receiver) and "T" (transmitter), nor noted any physical difference, so they may in fact be "the same", but I did NOT evaluate receive gain to a fixed input, etc. - I just went ahead and made sure I used one marked "R" for "receiver". They both read as a "capacitive component" of (2200 picofarad), and require no bias voltage like a condenser (audio frequency range) microphone.

## Features

- Nominal frequency (KHz): 40KHz
- Emission sound pressure at10V (0dB = 0.02mPa): ≥110dB
- Receiver sensitivity at40KHz (0dB = V / ubar): ≥-75dB
- Capacitance at1KHz, <1V (PF): 800 ± 30%
- The part with T is the Transmitter; the part with R is Receiver

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00M2GHG66 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #51,778 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #6 in Ultrasonic Proximity Sensors |
| Customer Reviews | 4.5 4.5 out of 5 stars (72) |
| Date First Available | July 24, 2014 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 0.634 ounces |
| Item model number | 3-01-0622 |
| Manufacturer | HiLetgo |
| Package Dimensions | 3.78 x 3.07 x 1.26 inches |
| Part Number | 3-01-0622 |

## Images

![HiLetgo 20pcs TCT40-16R/T 16mm Split Ultrasonic Sensor Ultrasonic Transceiver Probe 10 Transmitters + 10 Receivers T+R Ultrasonic Sensor Set - Image 1](https://m.media-amazon.com/images/I/61YDTkEHdhL.jpg)
![HiLetgo 20pcs TCT40-16R/T 16mm Split Ultrasonic Sensor Ultrasonic Transceiver Probe 10 Transmitters + 10 Receivers T+R Ultrasonic Sensor Set - Image 2](https://m.media-amazon.com/images/I/5181B-jwHeL.jpg)
![HiLetgo 20pcs TCT40-16R/T 16mm Split Ultrasonic Sensor Ultrasonic Transceiver Probe 10 Transmitters + 10 Receivers T+R Ultrasonic Sensor Set - Image 3](https://m.media-amazon.com/images/I/31N+B1+IkaL.jpg)
![HiLetgo 20pcs TCT40-16R/T 16mm Split Ultrasonic Sensor Ultrasonic Transceiver Probe 10 Transmitters + 10 Receivers T+R Ultrasonic Sensor Set - Image 4](https://m.media-amazon.com/images/I/31CxJhOXBdL.jpg)
![HiLetgo 20pcs TCT40-16R/T 16mm Split Ultrasonic Sensor Ultrasonic Transceiver Probe 10 Transmitters + 10 Receivers T+R Ultrasonic Sensor Set - Image 5](https://m.media-amazon.com/images/I/31akGsfR2gL.jpg)

## Questions & Answers

**Q: can the receivers be used as transmiters? I only need transmitters.**
A: No, the receivers are marked with R and transmitters with T.  You could experiment and see.  If you don't want to experiment, assume they are not the same and you must use R for receiver and T for a transmitter.

**Q: Do these do their own tone generation/demodulation? Or are they effectively high-frequency speakers/mics and an external circuit does the processing?**
A: They are effectively a high frequency speaker/mic

**Q: Can you use this to measure flow rate in a pressurized water pipe? How about gas?**
A: Most likely for water. For gas, it would depend on the gas density, and the sensitivity of your circuit.  I was able to get some pretty precise nodes in my setup for other things, so provided you know the math needed to calibrate the system, it should get job done. Are you trying to measure the speed using flight time or doppler?

**Q: How weatherproof are they?**
A: These ones are not waterproof.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works as expected, and at a good price
*by R***E on April 1, 2025*

Nice transducer. Works as specified. I use them in robotics, and The last application was proximity sensing to a Magic Book for Halloween. The closer someone got to the book, the brighter the pentagram on the book's cover would light. The price is very nice for this sensor.

### ⭐⭐⭐⭐⭐ Worked good for me. I'm not sure there is any real difference between the "T" and "R"
*by P***B on May 31, 2025*

I used one of these for the build of a directional ultrasonic detector to help find electrical arcs... The pickup seems to be exactly 40KHz as advertised, and my mixer ( mixed with 39Khz oscillator) circuit worked well, down-converting that to an audible 1Khz signal that can be heard in my headphones. I ran these across my component analyzer and saw no difference between the ones marked "R" (receiver) and "T" (transmitter), nor noted any physical difference, so they may in fact be "the same", but I did NOT evaluate receive gain to a fixed input, etc. - I just went ahead and made sure I used one marked "R" for "receiver". They both read as a "capacitive component" of (2200 picofarad), and require no bias voltage like a condenser (audio frequency range) microphone.

### ⭐⭐⭐⭐⭐ Cost was great
*by T***O on September 12, 2025*

Worked well used them as sensors on raspberry pie.

## Frequently Bought Together

- HiLetgo 20pcs TCT40-16R/T 16mm Split Ultrasonic Sensor Ultrasonic Transceiver Probe 10 Transmitters + 10 Receivers T+R Ultrasonic Sensor Set
- ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects
- HiLetgo 4pcs Ultrasonic Sensor Integrated Transceiver Waterproof Diameter 16MM

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.za/products/168186384-hiletgo-20pcs-tct40-16r-t-16mm-split-ultrasonic-sensor-ultrasonic](https://www.desertcart.co.za/products/168186384-hiletgo-20pcs-tct40-16r-t-16mm-split-ultrasonic-sensor-ultrasonic)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-12*