Siemens ET 200 – Electronic Module for ET200S 8ED DC 24 V : Amazon.co.uk: Everything Else
Siemens SIMATIC S7-200 , EM AQ02 / EM AQ 02 6ES7 288-3AQQ2-0AA0 | eBay
Siemens Simatic Et 200sp, Digital Input Module, Di 8x 24 V Dc High Speed, Pack Quantity: 1 U 6es7131-6bf00-0da0,6es71316bf000da0 - Instrument Parts & Accessories - AliExpress
1 PCS New Siemens ET200 6ES7134-6GF00-0AA1 analog input module 6ES71346GF000AA1 | eBay