Power Line Communications Modules HALO Electronics Power Line Communications (PLC) Modules are isolation transformers that are optimized for Lumissil Microsystems® IS32CG5317 HomePlug transceivers. These devices are compatible with Lead-free soldering process conditions per IPC/JEDC J-STD-020C. The power line communications modules are UL/EN62368 recognized with an extended operating temperature range of -40°C to +125°C. These devices are fundamentally designed for Power Line Communication (PLC) applications.