ER01DP25SB4_H3 Two Way Radio Headset for Hytera

Electrical Parameters of Speaker

Impedance

8Ω±1Ω

Resonance Frequency

350Hz ±20%

Intelligent Degree

111±5dB  At 1000 Hz At 0.179V

Rated Power

Rated Power Input 100mW, Max Power Input 250mW

Frequency Scope

20HZ—20KHZ At 0.179 V

Ruzzes & Rattles

Clear sound, no noise At 0.25V(50HZ-3KHZ)

Distortion

Less Than 5% at 1500Hz

Polarity

Positive Electrode,When an instantaneous DC voltage of 0.2V is applied to the positive electrode, causing the voice coil to move forward, the input terminal connected to the positive electrode is the "+" pole

Flux Density

±15% Guass (Surface)

Speaker Shell Diameter

Φ29mm±0.25mm

Electrical Parameters of The microphone

Sensitivity

-40dB≦S≦-36dB, At f=1kHz，S.P.L=1Pa，0dB=1V/Pa

Output Impedance

Zout=2.2KΩ,At f=1kHz

Current Consumption

IDss(Max)=500µA, At Vs=2.0V,RL=2.2KΩ

Directivity

Omni directional

Signal to Noise Ratio

S/N(Min)=55dB,At S:(f=1KHz.S.P.L=1Pa),N:(A-Weighted curve)

Decreasing Voltage

(ΔS-VS)Max=-3dB,At Vs Reduces from 2.0 to 1.0

Operating voltage

1≦V≦10

Maximum input S.P.L

110dB,At f=1kHz,THD＜1%