Description
Feature: There are 4 pins out of the module: VCC , Trig, Echo, GND . So it’s a very easy interface for controller to use it ranging. The all process is : pull the Trig pin to high level for more than 10us impulse , the module start ranging ; finish ranging , If you find an object in front , Echo pin will be high level , and based on the different distance,it will take the different duration of high level. So we can calculated the distance easily: Distance = ((Duration of high level)*(Sonic :340m/s))/2 Specifications: Center resonant frequency: 40kHz ± 2kHz Static capacitance: 3300P ± 300P Resonant impedance: 120Ω ± 20Ω Frequency bandwidth (-3dB): Δf-3dB ≥ 2kHz Operation voltage: 300 ~ 500VP-P Limit voltage ≤ 1000VP-P Transmitting beam angle: 6O degrees Operation temperature: -40 ~ +80 ℃ Protection class: IP65 Module details: Voltage: DC5V; Static current: Less than 2mA; Output signal: Electric frequency signal, high level 5V, low level 0V; Sensor angle: Not more than 15 degrees; Detection distance: 2cm-500cm High precision: Up to 0.3cm Package includes: 5* HC-SR04 Ultrasonic Distance Sensor 1*HC-SR04 Bracket 1*Male to Femal jump wires 20pin 10*cable ties for fixing HC-SR04