H012A is a cost effective dual earphone headset for ATCOM IP phones, It frees your hands and reduce interference environmental noise during phones calls.
H012A is compatible with all ATCOM IP phone models (RJ9)

Speaker Parameters

Sensitivity: 110 ± 3dB(1kHz under 178MV)
Speaker impedance: 150% ± 15% Ω (1kHz)
Frequency response: 100Hz - 10KHz
Distortion: 3% (1kHz under 178MV)
Ear-cap size: Ф30mm

Microphone Parameters

Sensitivity: -57 ± 2dB (2v, 2.2kΩ, 1kHz)
Distortion: 5% (1kHz under 178MV)
Microphone size: Ф6 x 2.7mm