The Sekonic SE RT-BR Transmitter is a user replaceable radio module that fits neatly next to the batteries in the SPEEDMASTER L 858D Light Meter. Upgrade your L 858D's firmware via Data Transfer Software, and you are ready to go. Sekonic's mission is to enable image makers to craft great light in every image, and the Sekonic RT BR simplifies the process. It helps you quickly dial in your lighting recipe to get to your final image with exacting precision. Full radio compatibility 99 Radio Studio Addresses (1 99), 40 Lamp Addresses (1 40, All) to remotely trigger your broncolor lights up to 30m (100ft) away. You can even wirelessly control the power of flash lights as well.
To be used with SE L858D and broncolor flashes
Fits L 858D light meter
Wirelessly control the power of flash lights and measure flash duration
Measure the % of flash in your images to maintain the desired mix of ambient to flash.