Use one Tigo TS4-A-F Rapid Shutdown Unit for cost-effective rapid shutdown of a single solar PV module (or use one TS4-A-2F Rapid Shutdown Unit for every two solar modules). As Tigo's TS4 rapid shutdown platform works over PLC (power line communications), TS4-A-F units require either an inverter with integrated RSS or Tigo's RSS Transmitter (available separately on the "Accessories" tab) in order to function.
Tigo is the only UL-certified multi-vendor rapid shutdown MLPE (module-level power electronics) solution for residential and commercial applications. Their TS4 platform offers module-level shutdown functionality in compliance with 2014/2017/2020 NEC 690.12 rapid shutdown requirements.