The ESP32LR42 is a WIFI connected relay module using the popular ESP32.

It provides 4 relays capable switching up to 16Amps and 2 digital inputs with pull-ups than can interface directly with volt free contacts. The normally open relay contacts have snubbers fitted across
them, and can drive inductive loads such as contactors and solenoids.

Power for the board is 12v dc, which can be provided by a standard universal wall power supply. A 1A or greater supply should be selected.

Control Protocols:

• Simple plain text commands sent to the module.
• HTML commands
• MQTT
• A built in webpage