Experience the enhanced functionality and convenience of the Rt-el/Px Elinchrom and Phottix Transmitter Module, specifically designed for the L-858D-u Speedmaster Light Meter. This advanced transmitter module is engineered to seamlessly trigger Elinchrom (Skyport) and Phottix (Strato) enabled lighting and receivers, optimizing your photography lighting setup.When paired with Elinchrom lighting, this transmitter module not only triggers the light but also provides comprehensive control over the power level. It further enhances your creative control by allowing you to manage the power level of the modeling lamp, complete with an On/Off feature. For a deeper understanding of Elinchrom's capabilities, visit the Elinchrom website.In conjunction with Phottix, the Rt-el/Px Transmitter Module simplifies the process of selecting groups and triggering a flash for measurement. This functionality requires the use of a Phottix Indra, Mitros+ set for Strato Ii reception, or a flash attached to a Phottix receiver with Strato Ii protocol. For more detailed information about Phottix and the Strato Ii protocol, please visit the Phottix website.In essence, the Rt-el/Px Elinchrom and Phottix Transmitter Module for L-858D-u Speedmaster Light Meter is a versatile tool that enhances your lighting control, making it an essential addition to your professional photography equipment..