# URM07 - UART Low-Power Consumption Ultrasonic Sensor (20~750cm)

**Type:** Product page · **SKU:** SEN0153 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/urm07-uart-low-power-consumption-ultrasonic-sensor-20-750cm.html ([markdown](https://core-electronics.com.au/urm07-uart-low-power-consumption-ultrasonic-sensor-20-750cm.html.md))

## Retired product

This product is retired and no longer available for purchase. Search the catalogue for an alternative.

## Description

#### Introduction

 An ultrasonic sensor measures distance by calculating the time difference between sending a signal and receiving an echo from an object. It uses echolocation to measure distances, just like a bat.

 The URM07 is an ultra low-power sensor. The effect range is up to 7.5m, and it has a wide range power supply of 3.0 - 5.5V. It is directly compatible with 3.3V or 5V devices such as Arduino, Raspberry Pi. etc. The average operating current is only 5mA and standby current is only 14uA. According to the principle of ultrasound sensors, the accuracy of the distance value will be affected by the air temperature and wind direction, so using a DFRobot URM07 built-in temperature sensor, you can read the ambient temperature, and automatically calculate temperature compensation. The sensor uses an integrated ultrasonic probe with a detection angle of approximately 60° in a compact and lightweight unit. The unit uses a 2.54mm pitch 4Pin interface, using UART communication, compatible with most common microcontrollers.

 URM07 Detecting Angle
 URM07 UART ultrasonic distance sensors have undertaken rigorous road testing and optimization. We guarantee that this sensor has first-class response speed, ultra high stability, the highest sensitivity and ultra low power consumption. If you have harsh environmental requirements for your sensor performance in your design, the URM07 is definitely the best choice.

#### FEATURES

4. Streamlined design
5. High Stability
6. High Sensitivity
7. Built-in temperature compensation
8. Low Power Consumption
9. Reverse polarity protection (short-term protection)
10. Overvoltage Protection
11. Convenient connection and Usage
#### Specification

13. Operating Voltage: 3.0 ~ 5.5V DC
14. I/O Operating Mode: Open Drain (OD), integrated pull-up resistor
15. Effective Range: 20 ~ 750 cm
16. Direction Angle: 60 °
17. Standby Current: <14 uA (mainly by the power chip consumption, the core circuit consumption <1uA)
18. Peak Current: <9 mA
19. Average Current: <5 mA (measured under continuous measurement, for reference only)
20. Distance Resolution: 1cm
21. Distance Error: 1%
22. Operating Temperature Range: -10 ~ 70 ℃
23. Temperature Error: ± 1 ℃
24. Operating Humidity Range: RH <75%
25. Acoustic Frequency: 38 ~ 42KHz
26. Boot Start Time: <20ms
27. Measurement Period: <60ms
28. Dimension: 27mm x 27mm
29. Weight: 4.2g Approx.
#### Parts List

31. URM07 - UART Low-Power Consumption Ultrasonic Sensor (20~750cm) x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/6/w/6w4a1300-900x600.jpg)