DP-BT 0.01Hz~100000Hz Schumann wave generator pure sine FM signal generator

Change frequency method:
Enter the frequency directly, press the lower left key 
to complete the setting. For example, press [7] [.] [8][3], 
and then press [OK] to set it to 7.83Hz. The default 
power-on output is 7.83Hz. Range 0.1~30KHz
Circuit board size: 15*15cm
Antenna waveform: sine wave
Interface waveform: sine wave + square wave + inverse square wave
(The lower left corner is the output interface, the waveform is output at the same time)
Power supply interface: DC5.5*2.1
Supply voltage: 5V
Rated power consumption: <1W
Default frequency: 7.83Hz
Adjustment range: 0.1Hz~30000Hz
Sine signal voltage amplitude: 3V
Square wave signal voltage amplitude: 5V

Packing: 1PCS