Keying cable for ICOM IC7100/7200/7300/706/718 with ALC.  Opto Isolation relay have 1500v isolation limit. If Coaxial cable between radio and amplifier needed you can add it to your order from https://www.ebay.com/itm/196951714308CW keying cable  https://www.ebay.com/itm/197140531695ICOM CI-V USB cable https://www.ebay.com/itm/196936616424