> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# URM14-RS485 Precision ultrasonic sensor(200KHz)

**Type:** Product page · **SKU:** SEN0358 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/urm14-rs485-precision-ultrasonic-sensor-200khz.html ([markdown](https://core-electronics.com.au/urm14-rs485-precision-ultrasonic-sensor-200khz.html.md))

DFRobot URM14 is a high-frequency precision ultrasonic sensor for industrial use. The sensor measurement and signal processing unit is completely encapsulated in...

## Pricing

- **Price:** $164.95 (inc GST) — $149.95 AUD, exc GST
- **Quantity discounts:** 6+ $142.45 (exc GST) · 12+ $136.45 (exc GST)

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## How to buy

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- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

DFRobot URM14 is a high-frequency precision ultrasonic sensor for industrial use. The sensor measurement and signal processing unit is completely encapsulated in an M18 metal shell and its tail is designed with an aviation connector plug. The sensor uses the RS485 interface that follows the standard Modbus-RTU communication protocol, which assures its compatibility with PLC industrial personal computer. Furthermore, the adoption of higher ultrasonic acoustic frequency and more precision signal processing circuit gives this URM14 sensor mm-grade accuracy and up to1.5m reliable measuring range. The only 12° measuring angle makes the sensor able to present the directional measurement characteristic similar to laser ranging sensors.

With the advanced auto noise detection function integrated, the URM14 sensor can detect noise in real-time and adjust its parameter based on the noise level. In addition, it comes with a flexible temperature compensation function that allows users to use the sensor built-in temperature compensation or external temperature compensation according to their needs, which makes it applicable to various complicated application scenarios.

![](https://core-electronics.com.au/media/wysiwyg/product_images/URM14-RS485-sen0358.jpg)

**Board Overview**

### Specification

- Operating Voltage: DC 7-15V
- Max Instantaneous Current: 350mA
- Effective Measuring Range: 100-1500mm
- Distance Resolution: 0.1mm
- Measuring Accuracy: 1mm
- Distance Error: ±0.1%
- Temperature Resolution: 0.1°C
- Temperature Error: ±1°C
- Measuring Frequency: 30HZ
- Operating Temperature: -20°C ~ +80°C
- Sensor Acoustic Frequency: 200KHz±4%
- Directional Angle: 12°±2°(-6dB)
- Protection Grade: IP65
- Communication Interface: RS485

### Documents

- [Product wiki](https://wiki.dfrobot.com/URM14_RS485_Precision_Ultrasonic_Sensor_200KHz_SKU_SEN0358)

### Parts List

- URM14-RS485 Precision Ultrasonic Sensor(200KHz) x1
- Mounting Nut x2

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/s/e/sen0358.jpg)