I had my electric meter replaced with a smart one today, and the IHD that was given is not the IHD 6 but the older IHD 3. Not only that, it appears to be an inferior version of the IHD 3 with no rechargeable batteries (IHD3-PPMID-AAA). This specific model was not listed on the OVO website. There is a battery compartment for a single AAA battery, however there is an issue where if you unplug it from the wall, and let the device switch to battery power, the buttons become unresponsive and they remain unresponsive when you plug it back in. To get the buttons working again you have to reboot it by unplugging it and taking out the battery. So I decided not to use the battery compartment.
Are IHD 3 models still being handed out despite the IHD 6 being the newest model? And why are they handing out this inferior model?