Secure Meters Ltd. Offers IID 100 Interface Device. Secure Meters Ltd is an ISO: 27001 and ISO: 14000 certified company. IID 100 Interface Device is used for fast data transfer from digital energy meters. It provides flexibility in connecting to hand held units [HHU], modems and PCs. IID 100 offers a cost-effective solution for local and remote meter reading. IID 100 Interface Device is Suitable for fast meter reading. It is also suitable for sites with multiple meter installation.