ats4dNHP Terasaki TemLogic 1 Mounting Panel 4D Tl101 Comms. Item No. ATS4D. Product Range: MCCB Basic Transfer Switch. Download product datasheet.ATS4D Dital Attenuators 4 BIT Mechanical Specifications: Case Style: AT Out Finish: Gold Plate per MIL-G-45204 Bias & Control Pins: ø0.02 x 0.15 long Connectors: SMA Female