3V High Level Driver Module 1 Channel Optocoupler Module Opto Isolation for Arduino IOT ESP8266 - High - Arduino, Robotics, Raspberry Pi, ESP8266, Learning DIY, Development board ICStation
1 Channel Relay 3V Relay Module for Micro:bit | ELECFREAKS
3V Relais Power Switch Board, iHaospace 1 Kanal Optokoppler Modul Opto Isolation High Level Trigger für IOT ESP8266 Entwicklungsboard: Amazon.de: Computer & Zubehör
Relaisansteuerung mit 3,3V? - #15 by HotSystems - Deutsch - Arduino Forum