"This NPower remote switch allows inverter to be controlled remotely in a vehicle. It includes 20-ft. extension cord, power LED indicator and mountable switch plate. Simple and secure connection. Works with Item#s 4571001, 4572000, 4572002, 4573000 and 4575000. Accessory Type Cable, Cable Sets Included 1, Compatible With Inverters, Cable Gauge 18, Cable Length ft. 20."