can the receivers be used as transmiters? I only need transmitters.

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.

Do these do their own tone generation/demodulation? Or are they effectively high-frequency speakers/mics and an external circuit does the processing?

They are effectively a high frequency speaker/mic

Can you use this to measure flow rate in a pressurized water pipe? How about gas?

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?

Hiletgo One Pair 16mm Ultrasonic Sensor Probe Split Ultrasonic Transceiver

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Description

📡 Elevate your sensing game with precision ultrasonic power!

COMPACT LIGHTWEIGHT - At just 16mm diameter and 18g, it fits seamlessly into your innovative projects without bulk.
SPLIT TRANSCEIVER DESIGN - Separate transmitter and receiver probes optimize signal transmission and reception efficiency.
PRECISION 40 K HZ FREQUENCY - Engineered for ultra-accurate ultrasonic detection, ensuring reliable signal clarity.
HIGH IMPACT SOUND EMISSION - Delivers powerful ≥110dB sound pressure at 10V for superior range and responsiveness.
SENSITIVE RECEIVER PERFORMANCE - Receiver sensitivity of ≥-75dB captures even the faintest ultrasonic signals with ease.

The HiLetgo 16mm Ultrasonic Sensor Probe set features a 40KHz nominal frequency with a powerful ≥110dB emission sound pressure and a highly sensitive receiver rated at ≥-75dB. Designed as split transceiver pairs, these compact and lightweight probes deliver reliable ultrasonic detection ideal for advanced electronics and communication projects.

Specifications

ASIN	B00M2GHG66
Best Sellers Rank	#103,862 in Electronics ( See Top 100 in Electronics ) #240 in Radio Communication Products
Item model number	3-01-0622
Manufacturer	HiLetgo
Package Dimensions	9.6 x 7.8 x 3.2 cm; 18 g

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€ 45.15

Duties & taxes included

In stock

Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Cyprus.

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TrustScore 4.5 | 7,300+ reviews

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HiLetgo One Pair 16MM Ultrasonic Sensor Probe Split Ultrasonic Transceiver+Receiver

Description

Specifications

Common Questions