The Smartwares SH4-90160 is a wireless switch operating at FSK 433 MHz. Manufactured by Smartwares, this device allows for remote control of connected devices. It is typically used in home automation applications for convenient on/off switching of lights or other electronic appliances. https://elecena.pl/product/28706010/smartwares-sh4-90160-basic-wireless-wall-switch-outdoor-use-battery-powered 2025-05-16 https://elecena.pl/product/28706010/smartwares-sh4-90160-basic-wireless-wall-switch-outdoor-use-battery-powered 2026-07-03