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Hong Kong SAR Model AL40C-20E from AL Goodwell Industries Ltd is as aluminum-encased water-resistant parking sensor that operates over 40kHz nominal frequency. It has 0.2m to 4m detectable range and 75deg-angle pick-up direction. It has about 95dB SPL at 300mm/10V rms sine wave, about 75dBV/u bar sensitivity and 2,000pF +/-25 percent at 1kHz capacitance.
The dual-use parking sensor is RoHS-compliant. It operates in temperatures within –30 degrees to 85 degrees Celsius.