Receiver - 28x7.4mm, 150ohm Impedance, 97+/-2db Sensitivity | Unmatched Quality And Longevity

Buzzer - NORYL Housing, 12x9.5mm, Rated Voltage 12V, Operating Voltage 8-16V, 85 dB Sound Output at 10cm, Resonant Frequency 2300±300 Hz, Operating Temperature -20 to +70°C, Storage Temperature -30 to +80°C

Electret Condenser Microphone - 4.0mm Diameter, 1.5mm Height, 42±3 Sensitivity, Less Than 2.2KOHM Impedance, Omni-Directional Performance

Microphone - 2.2k OHM Impedance, 2V Voltage | Custom Configuration for Power Supply and Frequency

Buzzer (UGPM1707XP)

Speaker-GP1318N-A

Speaker GP18N-B-H - Plastic, 8Ω 15% Impedance, 0.8W Rated Power, 91dB Sound Pressure Level | Loud Sound, Compact Size, Durable, Easy Install, Clear Audio

Speaker-GP1810N-A

Microphone-Latest

Color-Styled Headphones

Headsets - 40mm Mylar Speakers, 32Ω Impedance, 105dB Sensitivity, 100Hz-16000Hz Frequency Response, 3.5mm Plug