Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Resonant Frequency | 40kHz |
| Operating Voltage | 5V DC |
| Operating Temperature | -20°C to +70°C |
| Sensitivity | ≥ -65dB |
| Sound Pressure Level | ≥ 115dB |
| Beam Angle | 120 degrees |
| Housing Material | Metal Case |
| Pin Configuration | 2-Pin Through Hole |
| Component Diameter | 16mm |
| Package Contents | 1x Transmitter, 1x Receiver |
Anonymous
Apr 01, 2026
Rating: 5/5
Works as expected
Bought these to replace broken ones on an HC-SR04 clone. Soldering was easy and they function immediately.
Anonymous
Mar 06, 2026
Rating: 4/5
Good budget option
Signal is clear enough for basic distance measurement. Packaging could be better to prevent pin bending.
Anonymous
Feb 18, 2026
Rating: 5/5
Perfect for robotics
Using these for a line following robot with obstacle detection. Very responsive and consistent readings.
Anonymous
Feb 01, 2026
Rating: 3/5
Decent but fragile
They work fine electrically but the pins bent easily during shipping. Functionality is okay after straightening.
Anonymous
Jan 26, 2026
Rating: 5/5
Great for students
Bought for a university electronics project. Reliable performance throughout the semester without issues.
Q: Can these be used underwater?
A: No, these are air-coupled transducers only and are not waterproof.
Q: What is the impedance?
A: Typical impedance is around 300-400 ohms at resonance frequency.
Q: Do I need a driver circuit?
A: Yes, you cannot connect them directly to a GPIO pin without a driver circuit.
Q: Shipping time to US?
A: Usually takes 10-15 business days via standard international mail.
Q: Are TX and RX interchangeable?
A: No, one is marked T for transmit and one is marked R for receive.
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