You can download the following documents for A+ Module

I2C 16 DI Si838xP

I2C 4RO SRD

I2C 4AI ADS1x15 Pro

I2C 8DI

I2C 2RO+2DI Pro

I2C 4DI + 4DO

I2C 2RO+2AI Pro

I2C 8AI LTC2309