ADS1115 is an accurate 4-channel 16-bit analog-to-digital converter. It reads voltage values between 0 V and 3.3 V and converts them to digital output at up to 860 samples per second. The uses I2C to communicate with the host.
The ADS1115 supports either 4 single channel inputs or two differential inputs, making the chip great for high-side shunt measurements.
The module can be programmed to four different I2C addresses, meaning that up to four of these little critters can be connected to a single SH-ESP32.
The module is functionally identical to Adafruit 4-channel breakout boards and their documentation applies to this module as well.