{"title":"4-20SC-MaxSonar-WRMI(MB7789)","handle":"4-20sc-maxsonar-wrmi-mb7789","url":"/products/4-20sc-maxsonar-wrmi-mb7789","description":"The MB7789 4-20SC-MaxSonar-WRMI is a rugged, weather-resistant ultrasonic distance sensor with self-cleaning capability, designed for outdoor applications in high-moisture or condensation-prone environments. It provides millimetre-resolution distance readings from 500mm to 5000mm using a 4–20mA analogue current output (20mA at minimum range, 4mA at maximum range).\n\nThe self-cleaning feature helps reduce the impact of condensation and frost when the sensor runs continuously in closed or humid environments. The sensor is housed in a compact, IP67-rated PVC enclosure compatible with standard 3/4-inch PVC pipe fittings, and uses advanced signal processing for reliable readings in noisy conditions.\n\nKey Features\n\n\nSelf-Cleaning – Reduces impact of condensation and frost buildup\n\nWeather Resistant – IP67-rated PVC housing for outdoor use\n\n4–20mA Output – Industry-standard analogue current interface\n\nMillimetre Resolution – ~1.6mm measurement resolution\n\nLong Range – 500mm to 5000mm detection range\n\nIntelligent Target Selection – Reports distance to the largest acoustic return, ignoring clutter\n\nFactory Calibrated – Narrow beam pattern for reliable long-range detection\n\n\nSpecifications\n\n\nModel – MB7789\n\nOperating Voltage – 10–32V\n\nOperating Current – 40mA\n\nDetection Range – 500–5000mm (objects closer than 500mm typically read as 500mm)\n\nResolution – ~1.6mm\n\nRead Rate – 0.6Hz\n\nUltrasonic Frequency – 42kHz\n\nOutput – 4–20mA analogue current\n\nOperating Temperature – −40°C to +65°C\n\nIngress Protection – IP67\n\nCompliance – RoHS, CE\n\n\nIdeal For\n\nOutdoor tank and bin level monitoring\nHigh-moisture and condensation-prone environments\nIndustrial distance measurement\nAutomated fill-level detection\n\n\nPackage Contents\n\n1× MB7789 4-20SC-MaxSonar-WRMI ultrasonic sensor\n\n\nResources\n\n4-20SC-MaxSonar-WR Datasheet (PDF)\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":4986,"title":"Default Title","sku":"DF-SEN0267","price":486.55,"on_sale":false,"in_stock":true,"available_quantity":8,"option1":"Default Title"}]}