Sekonic - RT-20PW PocketWizard Transmitter Module

The Sekonic RT-20PW PocketWizard Transmitter Module lets you add a 344 MHz radio-triggering protocol to your Speedmaster L-858D-U light meter. Along with radio triggering, this module allows you to use up to 32 channels and 4 zones. With this transmitter module, you may also control the flash remotely and turn the power of the modeling light on and off.