A: Hi Roger,
Thank you for your email.
Unfortunately no the Brother DCP-1510 isn't wireless however take a look at the Brother DCP-1610W - http://www.printerbase.co.uk/dcp-1610w-a4-mono-laser-mfp.html?
I can confirm that this is both wireless and Mac Sierra compatible.
Please do let me know if you require any further information.
The Printerbase Team