The PocketWizard Plus IIIe has a total of 112 channels: 32 Quad-Zone E Channels and 80 Long Range Quad-Zone LR channels. Besides eliminating interference this also allows you to trigger flashes in 4 separate (A, B, C, D) zones when doing multiple setups. Auto-Sensing automatically selects the transmitter or receiver mode appropriate to the setup. Auto-Sensing also works in tandem with Auto-Relay mode to allow you to trigger a remote camera along with remote flashes. Two-Stage Triggering technology wakes and focuses your camera when partially depressing the test button, then fires it by fully depressing the button. The original Plus III was known for its long 1600' triggering range but the Plus IIIe's extended wireless rage allows shooting from distances up to 5 miles!
Good news for photographers, the Plus IIIe and Plus IVe are compatible with each other out of the box, but "non-e" Plus IVs and Plus IIIs can be upgraded by PocketWizard for a small charge. If you purchased "non-e" versions on or after 9/1/2019, the upgrade is free.