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Electret Microphone Insert (Condenser Mic Insert). dimensions: 11 x 7mm. Impedance 300-1000 ohms. Freq response 50Hz to 12KHz. Works from 1-10VDC. Small battery will power this unit such as SG13S. 2 Solder Contacts on the back. Change 1K resistor to lower value for lower battery voltage.
This handy compact panel meter will display the voltage and current clearly. It is ideal for a bench power supply or any project that requires accurate voltage and or current measurement. The meter can either be powered from the supply it is measuring if it is between 4.5-30VDC or from an independant power source.
Voltage Measurment : 0 - 100VDC
Current Measurment : 0 - 10ADC
Working Voltage : 4.5 - 30VDC
Dimensions : (W)48mm x (H)29mm x (D)22mm
Connetions
Red (Thick) - Voltage in for Current Measurment
Black (Thick) - Voltage out for Current Measurment