The Smartwares SH4-90162 is a wireless switch that operates on 433 MHz frequency. It's typically used for remotely controlling electrical devices within a home or office. This single-piece switch offers convenient and flexible automation solutions for smart home systems. https://elecena.pl/product/28706009/smartwares-sh4-90162-wireless-wall-switch-battery-operated-white 2025-05-16 https://elecena.pl/product/28706009/smartwares-sh4-90162-wireless-wall-switch-battery-operated-white 2026-07-03