The Smartwares SH4-99652 switch set operates at 433 MHz FSK frequency. It serves as a wireless switch system, ideal for controlling lights and appliances remotely. Typically used for home automation, it enhances convenience and energy efficiency. https://elecena.pl/product/28706000/smartwares-sh4-99652-basic-switch-set-outdoor-use-remote-3-way-400w 2025-05-16 https://elecena.pl/product/28706000/smartwares-sh4-99652-basic-switch-set-outdoor-use-remote-3-way-400w 2026-07-03