--- product_id: 25292147 title: "5PCS HC-SR04 Ultrasonic Module Distance Sensor Compatible with Arduino UNO MEGA Nano Robot XBee ZigBee" brand: "elegoo" price: "€ 16.48" currency: EUR in_stock: true reviews_count: 13 category: "Elegoo" url: https://www.desertcart.ie/products/25292147-5pcs-hc-sr04-ultrasonic-module-distance-sensor-compatible-with-arduino store_origin: IE region: Ireland --- # Low power <2mA quiescent current Accurate 0.3cm resolution 40kHz ultrasonic pulse frequency 5PCS HC-SR04 Ultrasonic Module Distance Sensor Compatible with Arduino UNO MEGA Nano Robot XBee ZigBee **Brand:** elegoo **Price:** € 16.48 **Availability:** βœ… In Stock ## Summary > πŸ“‘ Elevate your smart projects with precision sensing that never sleeps! ## Quick Answers - **What is this?** 5PCS HC-SR04 Ultrasonic Module Distance Sensor Compatible with Arduino UNO MEGA Nano Robot XBee ZigBee by elegoo - **How much does it cost?** € 16.48 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/25292147-5pcs-hc-sr04-ultrasonic-module-distance-sensor-compatible-with-arduino) ## Best For - elegoo enthusiasts ## Why This Product - Trusted elegoo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Energy-Efficient Operation:** Ultra-low 2mA standby current keeps your IoT sensors running longer without frequent recharges. - β€’ **Robust Outdoor Performance:** Proven reliable in real-world outdoor setups, even measuring water levels through turbulence and weather variations. - β€’ **Multipack Value & Versatility:** Five sensors in one pack empower multi-point sensing or backup options for ambitious makers and engineers. - β€’ **Pinpoint Precision Measurement:** Detect distances from 3cm up to 450cm with razor-sharp 0.3cm resolution for flawless project accuracy. - β€’ **Seamless Arduino Compatibility:** Plug & play with Arduino UNO, MEGA, Nano, and popular modules like XBee & ZigBee for rapid prototyping. ## Overview The ELEGOO 5PCS HC-SR04 Ultrasonic Distance Sensor pack offers high-precision, low-power ultrasonic ranging from 3cm to 450cm with 0.3cm resolution. Compatible with major Arduino boards and wireless modules, these sensors excel in both indoor and rugged outdoor environments, making them ideal for advanced DIY IoT, robotics, and industrial applications. ## Description Product description E legoo HC-SR04 Ultrasonic Sensor is a device that can measure the distance to an object by using sound waves. It measures distance by sending out a sound wave at a specific frequency and listening for that sound wave to bounce back. By recording the elapsed time between the sound wave being generated and the sound wave bouncing back, it is possible to calculate the distance between the sonar sensor and the object. Ultrasonic Sensor HC-SR04 is great for all kind of projects that need distance measurements, avoiding obstacles as examples. HC-SR04 provides 3cm-450cm non-contact measurement function, the ranging accuracy can reach to 3mm. The modules include ultrasonic transmitters, receiver and control circuit. Operating Principle of Ultrasonic Sensor As the name indicates, ultrasonic sensors measure distance by using ultrasonic waves. The sensor head emits an ultrasonic wave and receives the wave reflected back from the target. Ultrasonic Sensors measure the distance to the target by measuring the time between the emission and reception. The distance can be calculated with the following formula: Distance L = 1/2 Γ— T Γ— C where L is the distance, T is the time between the emission and reception, and C is the sonic speed. (The value is multiplied by 1/2 because T is the time for go-and-return distance.) For Arduino Project with Ultrasonic Sensor Elegoo Ultrasonic Sensor HC-SR04 is inexpensive and easy to use since we will be using a Library specifically designed for this sensor, which can be downloaded from elegoo.com. To use it for Arduino projects you would need an ELEGOO UNO R3 controller board. Technical Specification Power Supply :+5V DC Quiescent Current : 3mA Working Current: < 5mA Effectual Angle: <15Β° Ranging Distance : 3cm - 450 cm/1β€³ - 10ft Resolution : 0.3 cm Measuring Angle: 30 degree Trigger Input Pulse width: 10uS Dimension: 45mm x 20mm x 15mm Product Package 5 HC-SR04 Ultrasonic Sensors 10 Female-Male Dupont Cables 10 Female-Female Dupont Cables 1 Exquisite package box Protected with the thermoplastic film Review: Pretty reliable for short term harsh conditions. - These have worked great for sensing water level. I have had it sitting at the top of a sealed tank with two holes just big enough for the sensors to fit. I DIYed an enclosure out of an old plastic case that some GRK screws came in. This is absolutely not the recommended way to use them, but have been receiving accurate measurements for the last ~3 weeks with a 15 second update interval running 24/7. Review: Measures distance to water accurately. I'm using it to caclulate bridge clearance. Works OUTSIDE! (in a plastic box) - Complete project description follows but the keys for the Ultrasonic Distance Sensor: 1) it's been running in a plastic box, outside, for almost a month with no problem. The Arduino wakes us every 15 minutes and takes a measurement, transmits it, then goes back to sleep. 2) it is measuring the distance TO WATER! I even turned the swim jets in my pool on to test turbulence and it works fine. Green Pond Bridge Boat Clearance At β€˜very low tide’ the clearance under Green Pond Bridge in Cape Cod is 6’6” or less and that is too low for the boat I use. The tide charts for Falmouth, MA are theoretical and can vary as much as 18” from what is actually happening at the bridge. This system monitors the clearance and transmits the information on the internet. All of these parts were purchased from desertcart. Transmitter An (Arduino) Elegoo UNO R3 board is connected to an Elegoo HC-SR04 Ultrasonic Distance Sensor. The UNO and the sensor calculate the distance from a fixed dock to the sea level, then transmit that data using a MakerFocus NRF24L01 Wireless Transceiver to the Receiver described below. The Transmitter sits on the end of a dock where there is no power, so the UNO, Transceiver and Distance Sensor are powered by the energyShield 2. This battery has special capabilities – it wakes everything up every 15 minutes. The system takes a couple readings of the distance to the water then transmits that data, then the battery shuts it all off. The data transmitted includes information from the battery – time, date, and voltage. I have been testing this unit at home (in Dallas) and it has been operating outside, for about 20 days. Based on battery drain it looks like it will operate for about 4-5 months before it needs a recharge. When the temperature drops below zero the system still works fine but the voltage reported in the battery seems low. All of this is housed in a plastic box printed for the purpose with a FlashForge 3d Printer Creator Pro, using eSun White ABS+ filament Picture below. Receiver An (Arduino) Elegoo MEGA 2560 R3 is connected to another NRF24 Transceiver to receive the data. The MEGA does the math to convert the distance from the dock to the water, to the bridge clearance. Then the information is displayed on an Elegoo UNO R3 Touch Screen (that also works fine on the Mega). Picture below. A small plastic frame for the Receiver was also printed on the 3d printer Web Server Finally, the information in the MEGA is transmitted over a serial bus to a Hiletgo ESP8266 NodeMCU ESP-12E Internet WIFI Development Board (Also operates using Arduino IDE programming). This board is connected to the MEGA via the XCSOURCE Logic Level Converter and powered by a UCEC MB102 Breadboard Power Supply Module. All mounted on an Elegoo Breadboard. The ESP8266 is programmed to be a web server. It connects to the internet through the modem/router provided by AT&T. Picture of my cell phone below. ## Features - Ultrasonic hc-sr04 distance measuring transducer sensor - HC-SR04 consists of ultrasonic transmitter, receiver, and control circuit. When trigged it sends out a series of 40KHz ultrasonic pulses and receives echo from an object. - ~Power supply: 5V DC; quiescent current: less than 2mA; effectual angle: less than 15Β°; distance: 3cm450cm; resolution: 0. 3 cm~ - Package Content: 5pcs HC-SR04 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01COSN7O6 | | Best Sellers Rank | #19,412 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Ultrasonic Proximity Sensors | | Brand | ELEGOO | | Brand Name | ELEGOO | | Customer Reviews | 4.7 out of 5 stars 600 Reviews | | Global Trade Identification Number | 00746591610333 | | Included Components | Ultrasonic Sensor | | Item Dimensions | 0.59 x 1.77 x 1.18 inches | | Item Weight | 9.07 g | | Item dimensions L x W x H | 0.59 x 1.77 x 1.18 inches | | Manufacturer | ELEGOO | | Material | Aluminum | | Material Type | Aluminum | | Model | EL-SM-001 | | Part Number | EL-SM-001 | | Specific Uses For Product | Personal | | UPC | 719377200301 746591610333 | | Unit Count | 1.0 Count | | Warranty Description | 6 MONTHS | ## Product Details - **Brand:** ELEGOO - **CPU Model:** AMD A Series - **Color:** Bule - **Graphics Card Description:** Dedicated - **Included Components:** Ultrasonic Sensor - **Model Name:** EL-SM-001 - **Operating System:** Windows 10 - **Personal computer design type:** Barebone - **Screen Size:** 3 - **Specific Uses For Product:** Personal ## Images ![5PCS HC-SR04 Ultrasonic Module Distance Sensor Compatible with Arduino UNO MEGA Nano Robot XBee ZigBee - Image 1](https://m.media-amazon.com/images/I/71klfl5I+6L.jpg) ![5PCS HC-SR04 Ultrasonic Module Distance Sensor Compatible with Arduino UNO MEGA Nano Robot XBee ZigBee - Image 2](https://m.media-amazon.com/images/I/61tuwS1-UlL.jpg) ![5PCS HC-SR04 Ultrasonic Module Distance Sensor Compatible with Arduino UNO MEGA Nano Robot XBee ZigBee - Image 3](https://m.media-amazon.com/images/I/61mSb7ZbR2L.jpg) ![5PCS HC-SR04 Ultrasonic Module Distance Sensor Compatible with Arduino UNO MEGA Nano Robot XBee ZigBee - Image 4](https://m.media-amazon.com/images/I/510k3D-zGJL.jpg) ![5PCS HC-SR04 Ultrasonic Module Distance Sensor Compatible with Arduino UNO MEGA Nano Robot XBee ZigBee - Image 5](https://m.media-amazon.com/images/I/61LnBUyoNuL.jpg) ## Questions & Answers **Q: Do these things have to be plugged in?** A: I see from comments by others that I'm not the only one puzzled by your question. This device is a distance measuring sensor. As such, sensors need to be connected, or plugged into, other circuitry to make them work. In the case of the HC-SR04, it needs a signal, a pulse, from a circuit, Arduino microcontroller for example, to initial distance measurement and a circuit to receive the pulse signal from the HC-SR04 and do a time/distance calculation. Again an Arduino microcontoller. Is this all new to you? If so, there is a lot you will have to learn before you can use this device. There is plenty of help online however. **Q: Can you keep them on 24/7 without running to reliability issues? Any thoughts?** A: No, this module has no waterproof and temperature compensation function, you need to look for the prefessional one if you want to use it on 24/7. **Q: Will this work for a BeagleBone?** A: Can't say for sure, have only used these with Uno and Mega, work fine - note they have 4 pins (separate send/receive) as opposed to others with 3 pins (shared send/receive function). Great price - I've seen these sold for as much as $20 each. **Q: What are the measurements of one of these?** A: Google β€œSR04 dimensions” ## Customer Reviews ### ⭐⭐⭐⭐⭐ Pretty reliable for short term harsh conditions. *by J***S on April 7, 2026* These have worked great for sensing water level. I have had it sitting at the top of a sealed tank with two holes just big enough for the sensors to fit. I DIYed an enclosure out of an old plastic case that some GRK screws came in. This is absolutely not the recommended way to use them, but have been receiving accurate measurements for the last ~3 weeks with a 15 second update interval running 24/7. ### ⭐⭐⭐⭐⭐ Measures distance to water accurately. I'm using it to caclulate bridge clearance. Works OUTSIDE! (in a plastic box) *by F***. on January 19, 2018* Complete project description follows but the keys for the Ultrasonic Distance Sensor: 1) it's been running in a plastic box, outside, for almost a month with no problem. The Arduino wakes us every 15 minutes and takes a measurement, transmits it, then goes back to sleep. 2) it is measuring the distance TO WATER! I even turned the swim jets in my pool on to test turbulence and it works fine. Green Pond Bridge Boat Clearance At β€˜very low tide’ the clearance under Green Pond Bridge in Cape Cod is 6’6” or less and that is too low for the boat I use. The tide charts for Falmouth, MA are theoretical and can vary as much as 18” from what is actually happening at the bridge. This system monitors the clearance and transmits the information on the internet. All of these parts were purchased from Amazon. Transmitter An (Arduino) Elegoo UNO R3 board is connected to an Elegoo HC-SR04 Ultrasonic Distance Sensor. The UNO and the sensor calculate the distance from a fixed dock to the sea level, then transmit that data using a MakerFocus NRF24L01 Wireless Transceiver to the Receiver described below. The Transmitter sits on the end of a dock where there is no power, so the UNO, Transceiver and Distance Sensor are powered by the energyShield 2. This battery has special capabilities – it wakes everything up every 15 minutes. The system takes a couple readings of the distance to the water then transmits that data, then the battery shuts it all off. The data transmitted includes information from the battery – time, date, and voltage. I have been testing this unit at home (in Dallas) and it has been operating outside, for about 20 days. Based on battery drain it looks like it will operate for about 4-5 months before it needs a recharge. When the temperature drops below zero the system still works fine but the voltage reported in the battery seems low. All of this is housed in a plastic box printed for the purpose with a FlashForge 3d Printer Creator Pro, using eSun White ABS+ filament Picture below. Receiver An (Arduino) Elegoo MEGA 2560 R3 is connected to another NRF24 Transceiver to receive the data. The MEGA does the math to convert the distance from the dock to the water, to the bridge clearance. Then the information is displayed on an Elegoo UNO R3 Touch Screen (that also works fine on the Mega). Picture below. A small plastic frame for the Receiver was also printed on the 3d printer Web Server Finally, the information in the MEGA is transmitted over a serial bus to a Hiletgo ESP8266 NodeMCU ESP-12E Internet WIFI Development Board (Also operates using Arduino IDE programming). This board is connected to the MEGA via the XCSOURCE Logic Level Converter and powered by a UCEC MB102 Breadboard Power Supply Module. All mounted on an Elegoo Breadboard. The ESP8266 is programmed to be a web server. It connects to the internet through the modem/router provided by AT&T. Picture of my cell phone below. ### ⭐⭐⭐⭐⭐ Good quality and easy to use with plenty of example code available *by J***D on November 5, 2019* These are nice devices to work with and are easy to use to implement for distance measurements. I used these for a particular project to determine a garage door position (open,closed, or in-between) I have been using these devices for more than a year without any problems with accuracy. ## Frequently Bought Together - ELEGOO 5PCS HC-SR04 Ultrasonic Module Distance Sensor Compatible with Arduino UNO MEGA Nano Robot XBee ZigBee - ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects - ELEGOO UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ie/products/25292147-5pcs-hc-sr04-ultrasonic-module-distance-sensor-compatible-with-arduino](https://www.desertcart.ie/products/25292147-5pcs-hc-sr04-ultrasonic-module-distance-sensor-compatible-with-arduino) --- *Product available on Desertcart Ireland* *Store origin: IE* *Last updated: 2026-05-28*