(1)23.5-6000mhz Signal output; (2)Accuracy:0.001mhz; (3)-4dB ,-1dB ,2dB ,5dB Power regulation; (4)Support frequency sweep function; (5)Support SCM serial port control , SCM sends commands through serial port interface to adjust frequency output and power control. CH1 support -4dB,-1dB,2dB,5dB Power regulation,CH2 support -15Db to -25dB power regulation. Support USB serial port to send commands to adjust frequency output and power control Dual- for USB-powered computer, or 5V 1A lithium-ion battery-powered. Colour:Blue Material:PC Package Contents: 1 x HT008 signal source module 1 x USB cable(Due to different product batches, the appearance , which does not affect the use) 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.