Pre-Order your Main Switch 200 now. Main Switch is an electronic primary switch designed for switching of the main power supply (Main Battery) for your RC model. It adds an element of safety when handling the model, without the need to physically disconnection of the main battery pack. The advantage of an electronic switch is that it offers a virtual unlimited On/Off cycles, unlike mechanically operated switches. The Main Switch prevents the connectors from sparking when connecting the batteries, in fact it also replaces Anti-Spark connectors. Two versions are offered; Main Switch 200A with Magnetic Switch, or Main Switch 200 with R3/Wireless Switch.