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DYP-A21AYY4W-V1.0 RS485 Ultrasonic Obstacle Avoidance Sensor (Object Range 3 ~ 500cm) — image 1
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DYP

DYP-A21AYY4W-V1.0 RS485 Ultrasonic Obstacle Avoidance Sensor (Object Range 3 ~ 500cm)

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DYP Ultrasonic Sensors for everyday users

The DYP-A21AYY4W-V1.0 RS485 Ultrasonic Obstacle Avoidance Sensor (Object Range 3 ~ 500cm) by DYP is a mid-range dyp ultrasonic sensors designed for everyday users. It features Measurement Range: 3 to 500cm and Model Series: DYP A21.

₹3,124
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Total: ₹3,124
Buying tip: A quality investment for dependable performance and premium build quality.
Estimated delivery: 17 Aug31 Aug
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Quick Specs

Measurement Range: 3 to 500cm
Model Series: DYP A21
Model No. / Name: A21AYY4WV
Operating Voltage (V): 3.3 to 24
Accuracy: 1+(Sx0.3%)
Working Current (mA): <=10

Ideal For

Electronics projectsArduino / Raspberry Pi buildsPrototyping
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SKU: robu-2094418Category: DYP Ultrasonic Sensors

About This Product

The DYP-A21AYY4W-V1.0 RS485 Ultrasonic Obstacle Avoidance Sensor (Object Range 3 ~ 500cm) by DYP is a mid-range dyp ultrasonic sensors designed for everyday users. It delivers reliable performance at an accessible price.

Key Specifications

  • Measurement Range: 3 to 500cm — reliable connection even at a distance
  • Model Series: DYP A21
  • Model No. / Name: A21AYY4WV
  • Operating Voltage (V): 3.3 to 24 — works with standard household power
  • Accuracy: 1+(Sx0.3%)
  • Working Current (mA): <=10
  • Output: controlled
  • Shipping Weight: 0.05 kg

Why Buy from Pricio?

Pricio sources this product directly, cutting out multiple middlemen. Every order includes free shipping, a 15-day return policy, and secure payment via Razorpay.

The A21 module is an ultrasonic obstacle avoidance sensor designed based on robot automatic control application, focus on designing for problems on the current market ultrasonic sensor large blind spot, small measurement angle, long response time, poor installation adaptability and other problems, the A21 module has a series of advantages like small blind spot, large measurement angle, short response time, the same frequency filtering interference, high installation adaptability, dust and waterproof, long life and high reliability. The intelligent acoustic processing technology independently developed by our company can identify and filter the interference acoustic wave, and output data more stable and reliable, making the A21 module reduce the probability of same frequency ultrasonic interference to a certain extent, and meet the users' application needs for the complex environment in the filed of robot automatic control. A21 module, hereinafter referred to as "module".

Features:

  1. Wide supply voltage
  2. Small blind spot
  3. The output method is optional
  4. Support range modification
  5. Support baud rate modification
  6. Support address modification
  7. Support angle setting
  8. Support the power supply noise reduction level setting
  9. Effectively reduce the probability of same frequency interference
  10. High waterproof grade
  11. Simple to install
  12. Wide working temperature
  13. Strong anti-static
  14. Standby ultra-low power consumption
  15. High measurement accuracy
  16. Data measurement is stable and reliable

Application:

  1. Robot avoidance and automatic control
  2. Horizontal ranging
  3. Parking Management System
  4. Object proximity and presence awareness

Package Includes:

1 x DYP-A21AYY4W-V1.0 RS485 Ultrasonic Obstacle Avoidance Sensor (Object Range 3 ~ 500cm)

Setup Guide

1
Identify the pins
Locate VCC (power), GND (ground), and data pins (SDA/SCL for I2C, MOSI/MISO for SPI, or TX/RX for UART). Refer to the pinout diagram on the product page.
2
Wire to your microcontroller
Connect VCC to 3.3V or 5V (check the module spec), GND to GND, and data pins to the appropriate GPIO pins on your Arduino or Raspberry Pi.
3
Install libraries
In Arduino IDE, go to Sketch → Include Library → Manage Libraries and search for the sensor library. Install the recommended version.
4
Upload example sketch
Open File → Examples → [library name] → Basic Example. Upload to your board and open Serial Monitor to view output.
5
Calibrate if needed
Some sensors (temperature, humidity, distance) may need a short warm-up period or calibration. Run the calibration sketch if provided.