DIRECTV SIM-01 Single Wire Multi-Switch SWM Installation Meter admin August 13, 2024 August 13th, 2024 directv directv installation meter multi-switch sim-01 single wire The Single Wire Multi-Switch SWM Installation Meter checks that each cable drop within a home can support SWM operations. With Low Battery Indicator? Requires 3 AA Alkaline Batteries. Check out my other items.