Ultrasonic Distance Sensor - 3.3V (HC-SR04), 180° (red)
The HC-SR04 ultrasonic sensor offers economical, non-contact distance measurements from 2cm to 400cm with up to 3mm accuracy, integrating a transmitter, receiver, and control circuit.
Helpful Documentation
Product Overview
This is the HC-SR04 ultrasonic distance sensor, now in Red! This economical sensor offers non-contact measurement functionality ranging from 2cm to 400cm, with a ranging accuracy of up to 3mm. Each HC-SR04 module includes an ultrasonic transmitter, a receiver and a control circuit.
There are only four pins that you need to worry about on the HC-SR04: VCC (Power), Trig (Trigger), Echo (Receive), and GND (Ground). You will find this sensor very easy to set up and use for your next range-finding project!
This sensor has additional control circuitry that can prevent inconsistent "bouncy" data depending on the application.
Note: This is the same ultrasonic sensor used with the XRP & XRP DIY kits.
Features & Specs
- Working Voltage (DC): 3.3V~5V
- Working Current: 15mA
- Working Frequency: 40Hz
- Max Range: 4m
- Min Range: 2cm
- Measuring Angle: 15°
- Dimension: 45 x 20 x 15mm
Documentation
Customer Reviews

Stock and Customer Discounts
Available Discounts
- $6.60 | 10+ units
- $6.26 | 25+ units
- $5.91 | 100+ units