Look at Xhorse VVDI MINI ELV Emulator for Benz W204 W207 W212:
Price: £117 (5 pieces in total)
New MINI ELV Emulator is smaller and cheaper than the old ELV emulator.
New MINI ELV Emulator: Use the cable ties to fasten the position.
old ELV emulator: install on the original position to replace.
1- Share the same functions.
2- Works with VVDI MB BGA tool.