Hi Gruntman, Thanks for the info. I have the EnviroMon products on hand, which is the EL005, EL026 with the EL030, whole set used for temperature and humidity measurements. In the "Pico Technology" folder -> "EnviroMon" folder, I found "EMD32044.DLL", is this the dll for my products? If you can prov...

Hi Gruntman,

Thanks for your reply.

But some how when I try to add reference for the ".dll" file, there is a pop up message show that it is an invalid com object. So, I can't use the .dll file.

Can you please provides some help. I'm using C# for VS2005.

Actually how do I get those instruments' driver/ DLL?