Smart module
Courtesy Tigo Energy
Tigo Energy optimizer (next image) is used in “smart modules” (shown). Module manufacturers (such as Jinko, Trina Solar, and UpSolar) replace the normal module junction box with this field-replaceable Tigo optimizer to create a “smart module.” Similar to AC modules, this approach reduces MLPE installation time and cost. (Note: The smart module optimizer is shown as a cutaway in this photo.)