!free! | Aj Sr04m Datasheet

The official provides the following timing parameters for PWM mode:

If no object is detected within the maximum ranging distance (e.g., 5m), the Echo pin will time out after approximately 60ms and return LOW. This prevents your microcontroller from hanging indefinitely. Aj Sr04m Datasheet

20cm to 800cm (depending on the specific version and surface). Working Frequency: Beam Angle: ~75 degrees. Precision: High accuracy (roughly 2mm resolution). Probe Structure: Integrated closed-type splash-proof wire probe. Working Principle and Modes The official provides the following timing parameters for

The is a high-performance, waterproof ultrasonic ranging module designed for precise non-contact distance measurement in harsh environments . Unlike the standard HC-SR04, it features a separated probe design with an IP67 rating, making it ideal for outdoor applications like water level monitoring, vehicle reversing sensors, and industrial obstacle avoidance. Technical Specifications Fabian Enterprises Working Frequency: Beam Angle: ~75 degrees