Sound pickup:Mini size, low noise, sensitive,Widely working voltage, built-in polar circuit. Sound pickup TS-190Feature:Mini size, low noise, sensitiveWidely working voltage, built-in polar circuitAmplified by a special audio CI(high power and low noise)Without frequency limited,excellent sound claritySMT manufacturing techniqueTechnical parameters:Working voltage : DC4-14VWorking current : 5mA- ...