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Technical Parameters: 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-450cm High precision: Up to 0.3cm Package includes: 1X Ultrasonic Module.