Regarding BOLT module and interfacing

Can we use I2C(Inter Integrated circuit) for multiple sensor connections with BOLT module?

yes,you can use microcontrolers like arduino. this can be connected over the uart pins in the bolt that tx and the rx pins.for more conection details contact me over reply

yes .we can integrate wifi module with arduino nano,arduino mega ,raspberry pi3 b+ with
rx and tx pin available at these microcontroller.