1.9kHz-6GHz, 0.25dB steps, up to 3175dB, high-performance digitally controlled attenuator, estimation, debugging, and automation. 2. Excellent specifications, multiple fine-tuning for performance, with only 3.2dB insertion loss at 6GHz. Return loss is 15dB at all settings, and operation remains usable up to 10GHz, meeting the demands of demanding ADC acquisition scenarios. This is due to its excellent standing wave performance, and the error in switching attenuation settings at different input powers is minimal. 3. Fast attenuation switching. The onboard eight-position DIP switch allows for instant attenuation control. With the first position set to OFF (parallel control), seven positions can be used to precisely control attenuation settings of 0.25dB, 0.5dB, 1dB, 2dB, 4dB, 8dB, and 16dB, respectively. A serial SPI control pin is reserved. With the first position set to ON, complex attenuation operations can be performed in real time via a program. Color: Black Material: PCB Package Contents: 1 x Module Only the above package content, other products are not included. Note: Light reflection 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.