{"title":"Water-proof Ultrasonic Sensor (ULS)","handle":"water-proof-ultrasonic-sensor-uls","url":"/products/water-proof-ultrasonic-sensor-uls","description":"A high-performance waterproof ultrasonic distance sensor with an enclosed probe, capable of measuring distances from 270 mm to 8000 mm. Based on ultrasonic echo ranging, it determines distance by measuring the time between sending a pulse and receiving the echo — no physical contact required.\n\nSuitable for detecting a wide range of materials including transparent objects, metals, non-metals, liquids, solids, and powders. The bell-mouth shell design improves directivity and output stability.\n\nKey Features\n\n\nWaterproof Probe – Enclosed design for outdoor and wet environments\n\n3.3–12 V Supply – Wide operating voltage range with low power consumption (~5 mA average at 5 V)\n\n270–8000 mm Range – 270 mm blind zone, up to 8 m maximum detection\n\n1 mm Resolution – High-precision distance measurement\n\nMultiple Output Modes – Serial (UART), PWM, and switch output\n\nTemperature Compensation – Built-in temperature output and compensation for accurate readings\n\n40 kHz Centre Frequency – Standard ultrasonic operating frequency\n\n\nSpecifications\n\n\nOperating Temperature – −15°C to 60°C\n\nStorage Temperature – −25°C to 80°C\n\nOperating Current – Average 5 mA (at 5 V, 250 ms duty cycle)\n\n\n\nNote: The internal probe surface is the default detection starting point. If using the bell-mouth plane as the starting point, subtract 40 mm from the measured distance.\n\n\nResources\n\n\nProduct Wiki (wiring diagrams, Arduino examples, output mode configuration)\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":4858,"title":"Default Title","sku":"DF-SEN0300","price":47.23,"on_sale":false,"in_stock":true,"available_quantity":1,"option1":"Default Title"}]}