【30A Rocker Switch】 It's a Large Current Heavy Duty Rocker Switch, the Switch Rating is 30A 250VAC. So the switch can be used well on 3A, 6A, 10A, 15A, 16A, 20A, 25A, 30A at 120 Volt or 240 Volt. 【Red lighted 120V Rocker Switch】 This Round Rocker Switch with Red Lamp, The input voltage for the lamp of switch should be AC 110V to 250V. The Switch Lamp will light up to indicate the operating status of the device when the switch is turned ON. 【ON OFF DPST Switch】 It's an DPST 4 Pin ON OFF Rocker Switch, Double Pole Single Throw design and T125 Tempature Degree(-25C to +125C). 【Installation】 The KCD4 KCD4 Rocker Switch fits for 30X22mm panel Cut-out size, very easy to install(Snap In flush mount version). 【Application】 It's widely used as Industrial & Scientific Toggle Switch, Fit for most kinds of household appliances such as water dispenser, treadmill, coffee pot and other electronic equipments.