Aj Sr04m Datasheet [exclusive] Jun 2026

The AJ-SR04M is a reliable and affordable ultrasonic sensor module suitable for a wide range of applications. Its compact size, low power consumption, and high accuracy make it a popular choice among developers and engineers.

The AJ-SR04M has on the small control board (not directly on the sensor head). The sensor head connects via a waterproof cable. aj sr04m datasheet

long duration = pulseIn(ECHO, HIGH, 30000); // timeout 30ms (≈5m) if (duration == 0) Serial.println("Out of range"); else float distance = duration / 58.3; Serial.print("Distance: "); Serial.print(distance); Serial.println(" cm"); The AJ-SR04M is a reliable and affordable ultrasonic

The AJ-SR04M is a compact ultrasonic sensor module that uses a transmitter and receiver to measure distances. It is commonly used in robotics, automation, and IoT projects. The sensor head connects via a waterproof cable

The AJ-SR04M works by emitting a high-frequency sound wave and measuring the time it takes for the sound wave to bounce back from an object. The module consists of a transmitter and receiver. The transmitter sends out a 40kHz ultrasonic signal, which bounces off an object and returns to the receiver. The receiver then sends a signal to the microcontroller, which calculates the distance based on the time difference between the transmitted and received signals.

The AJ-SR04M is a reliable and affordable ultrasonic sensor module suitable for a wide range of applications. Its compact size, low power consumption, and high accuracy make it a popular choice among developers and engineers.

The AJ-SR04M has on the small control board (not directly on the sensor head). The sensor head connects via a waterproof cable.

long duration = pulseIn(ECHO, HIGH, 30000); // timeout 30ms (≈5m) if (duration == 0) Serial.println("Out of range"); else float distance = duration / 58.3; Serial.print("Distance: "); Serial.print(distance); Serial.println(" cm");

The AJ-SR04M is a compact ultrasonic sensor module that uses a transmitter and receiver to measure distances. It is commonly used in robotics, automation, and IoT projects.

The AJ-SR04M works by emitting a high-frequency sound wave and measuring the time it takes for the sound wave to bounce back from an object. The module consists of a transmitter and receiver. The transmitter sends out a 40kHz ultrasonic signal, which bounces off an object and returns to the receiver. The receiver then sends a signal to the microcontroller, which calculates the distance based on the time difference between the transmitted and received signals.