The part number for an indication LED for the 56SW110 is -
56LEDK1
Please go to the website via the following links below and check under the Documentation Tab for more information.
Australia - https://www.clipsal.com/products/detail?CatNo=56LEDK1&itemno=56LEDK1&backto=/search?q=56LEDK1&tab-document-1=0
New Zealand - https://www.pdl.co.nz/products/detail?CatNo=56LEDK1&itemno=56LEDK1&backto=/search?q=56LEDK1&tab-document-1=0