[Signal output function]The DDS signal generator module has a signal output function, and the DDS output signal can be through the UP and DOWN buttons.[Step frequency setting]The DDS signal generator module has step frequency setting function, the step frequency can be set through the internal step function, the step frequency value: 1, 10, 100, 1000, 10000Hz.[highspeed square waving () output]The DDS signal generator module has highspeed square waving () output function, the amplitude and offset can be adjusted through the knob. The offset is: 0.5pp5Vpp.[Easy to use]This signal generator module is small in size, easy to carry and store, easy to use, and good in performance.[Material]This signal generator module is made of high-quality materials, sturdy and durable, simple in structure, easy to assemble, neat in appearance, self-operable, suitable for DIY assembly.Colour: greenMaterial: PCBSize: 7x6cmPackage Contents:1 * Signal Generator ModuleOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.