Small product image ◃ Smart touch glass switch, quartet. ◃ 2.4GHz wireless frequency. ◃ Incandescent bulbs up to 625W per button, LED bulbs up to 150W per button. ◃ Set schedules, timer by app. ◃ Save and activate a schedule even without an internet connection. ◃ Measure power consumption, and track usage history. ◃ Input voltage: AC 110-240V 50/60Hz. ◃ Suitable for a 3-place Gewis box. ◃ White color. ◃ Manufacturer: Semicom Model: STW-3GEV4/W Supported apps for download: Semicom Smart app for download for Android or iOS Google Assistant app for download for Android or iOS Amazon Alexa app for download for Android or iOS