ESP2Relay Controller is a free Android application developed by Jamorn Saksommon in the Utilities and Tools category. It is a simple yet useful app that allows wireless control of 2-4 way relays through a 12V dual WiFi relay module.

The app is compatible with 8 bit MCU chips and uses ESP-01 as the WiFi module. It requires only a simple configuration process to set up wireless control of the relays using the mobile phone app in the local area network (LAN). With this app, users can easily control their relays from anywhere within the range of the WiFi connection, without the need for any additional hardware or complicated setup.