Features advanced ultrasonic ranging with 30-500 cm range
Equipped with IP65 waterproof probe for reliable use
Offers temperature compensation function for accurate measurements
Supports RS485 interface with standard Modbus-RTU protocol
The DFRobot URM15 75KHZ Ultrasonic Sensor (30~500cm, RS485) is an advanced ultrasonic ranging sensor. It is equipped with an IP65 waterproof probe and has been tested to provide an effective measuring range between 30 and 500 cm on a flat wall. The sensor employs the RS485 interface, adhering to the standard Modbus-RTU protocol, ensuring reliable data communication. This feature, along with its support for revisable slave addresses and serial parameters, makes it highly suitable for various industrial controlling machines.
The URM15 is also designed with a temperature compensation function. This allows for the selection of either external or onboard temperature compensation, thereby minimizing the influence of ambient temperature on the measurement. The sensor incorporates a 75 KHz ultrasonic transducer with a diameter of 40 mm, which results in a relatively small measuring angle and high sensitivity.
The sensor is characterized by its IP65 grade protection and an RS485 communication interface that is based on the standard Modbus RTU protocol. It functions on a voltage range of 5-12 V DC and can handle a maximum instantaneous current of 350 mA. The sensor's distance resolution is 10 mm with a distance error of ±1%, while the temperature resolution is 0.1 ℃ with a temperature error of ±1℃. The measuring frequency stands at 10 Hz and it can operate in temperatures ranging from -10 to＋70 ℃. The operating humidity range is less than 75% RH. The sensor's acoustic frequency is 75KHz±2% and the directional angle is 20±2°(-6 dB). Communication is facilitated via RS485 (Modbus-RTU).
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at RoboItchi's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
The RA number is valid for 30 days. The returned item must be received within that period.
The RA number must be included with the return.
Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RoboItchi's troubleshooting process or of a verified shipping error by RoboItchi.
Refunds are processed within 7 days after receipt and inspection of the returned item.
A ¥10,000 cleaning fee may apply to domestic robots returned in used or unclean condition.
A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RoboItchi's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
Consumables — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tires, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odor-absorbing products). Not eligible for return once unsealed.
Build-it-yourself products and items requiring customer assembly — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
Digital Goods, Software, and Apps — Final sale only, due to licensing restrictions.
Clearance Items — Products identified as clearance or final sale, including end-of-life or discontinued items.
Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
On-Demand Items — Standard catalogue products not stocked by RoboItchi and ordered specifically to fulfill a customer request.
To request a return, submit a support ticket from your account under My Support Tickets to obtain a Return Authorization (RA) number. Returns without an RA number will be refused.
