For Schumann Wave Generator Pulse Sine Frequency+Audio Output Connector+Case

1PC DDS Function Signal Generator Module 0.01Hz-500Khz Sine + Square Wave FG-200

DC7-24V Signal Generator PWM Pulse Adjustable Module Sine Wave with Modbus

Hand-held Generator PWM Pulse Rectangular Sine Triangular

DC 7-24V Signal Generator PWM Pulse Adjustable Module Sine Wave with Modbus

Industrial PWM Pulse Signal Generator with Accuracy Tuning ABS Sine Module

FG-100 DDS Function Signal Generator Module 1HZ-500KHz Sine +Square Wave 3.7-10V

New PWM Pulse Sine Triangle Wave Signal Generator 4-20mA 2-10V Signal Source