Excluding ESP-01S module, please note
Version difference: The new version has the same size as the old version, where
1. The wiring has been thickened, allowing for greater current flow.
2. Supports ESP-01 (not supported in older versions)
3. Added optocouplers, greatly improving module performance
4. Low level control (old version of high level control)
5. Wide voltage input, supports DC 5-12V (old version values support 5V)
This intelligent relay module is independently designed, developed, and produced by IOTMCU studio, based on the ESP-01/01S WIFI module design. It can be used to DIY its own intelligent switch, remotely controlled through a mobile app, and provides APP and LUA source programs. Ready to use, simple and convenient.