The basic working principle 1. Use the IO port TRIG to trigger a high-level signal of at least 10us; 2. The module automatically sends eight 40kHz pulses and detects whether a signal is returned; 3. When a signal is returned, a high-level pulse is output through the IO port. The duration of the high level corresponds to the time taken for the ultra wave to travel to the target and return. Distance = (high level time × speed of sound (340m/s)) / 2; 4. Using a simple method, apply a 10us high-level signal to the control pin, then wait for the high-level output on the receiving pin. When the output goes low, read the value which represents the echo time. This allows calculation of distance. Repeating this cycle continuously enables continuous distance measurement. Electrical properties 1. Model: JSN-SR04T 2. Operating voltage: DC 5V 3. Standby current: 5mA 4. Working current: 30mA 5. Ultra frequency: 40kHz 6. Maximum detection distance: 4.5m 7. Minimum detection distance: 25cm 8. Pin configuration: +5V (power supply) Trig (trigger input) RX (receiver output) TX (transmitter) GND (ground) 9. Resolution: approximately 0.5cm 10. Beam angle: less than 50 degrees 11. Operating temperature: -10°C to +70°C 12. Storage temperature: -20°C to +80°C Product Features 1. Compact size and easy to use 2. Low operating voltage and low power consumption 3. High measurement accuracy 4. Strong anti-interference capability 5. Integrated waterproof probe with enclosed wiring, suitable for wet or harsh environments Applications 1. Distance measurement 2. Obstacle detection and avoidance, automatic control systems 3. Object presence detection 4. Traffic monitoring 5. Security systems and industrial controls 6. Artificial intelligence and research projects Color: Random color shipped based on availability Material: PCB Version: Old version Note: Product appearance and color may vary slightly between batches, but functionality remains unchanged. Package Contents: 1 x Ultra Module Note: Light reflection and differences in display settings may cause slight variations in the color shown in images compared to the actual product. Measurement error allowance: +/- 1-3cm.