Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Model Number | AJ-SR04M K |
| Operating Voltage | DC 5V - 12V |
| Detection Range | 2cm - 450cm |
| Output Signal | Square Wave PWM |
| Waterproof Rating | IP67 |
| Operating Temperature | -20°C to 70°C |
| Beam Angle | 15 degrees |
| Response Time | 50ms |
| Housing Material | ABS Plastic |
| Module Dimensions | 45mm x 30mm x 15mm |
Anonymous
Apr 07, 2026
Rating: 5/5
Accurate measurements
Tested against a laser measure and it is surprisingly accurate for the price. Square wave output is easy to read with an oscilloscope.
Anonymous
Mar 23, 2026
Rating: 5/5
Great for robotics projects
Works perfectly with my Arduino setup. The dual-head feature reduces blind spots significantly compared to standard sensors.
Anonymous
Mar 01, 2026
Rating: 4/5
Good backup sensor
Installed this on my golf cart. Waterproofing holds up well in rain. Wiring took some time to figure out but works now.
Anonymous
Feb 02, 2026
Rating: 3/5
Decent but sensitive
Works well indoors. Outdoors in wind, it gets some noise. Need to filter the data in code to get stable readings.
Anonymous
Jan 27, 2026
Rating: 5/5
Excellent value
Better than the standard HC-SR04 for outdoor use. The integrated design saves space on my chassis.
Q: Can this run on 3.3V logic?
A: The module operates on 5V-12V, but output is compatible with 3.3V MCUs with proper leveling.
Q: Can I use just one head?
A: The module is integrated for dual-head operation to minimize blind zones; single head use is not supported.
Q: What is the maximum detection distance?
A: Under ideal conditions, it reaches up to 4.5 meters.
Q: Does it come with mounting brackets?
A: No, mounting hardware is not included in the package.
Q: Is it fully submersible?
A: It is IP67 rated, so it withstands immersion up to 1 meter for 30 minutes, but not for prolonged underwater use.
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