Resideo to Discontinue the VISTA-21iP
Posted By Julia RossResideo has announced that the VISTA-21iP and VISTA-21iPLT control panels will be discontinued for sale in the U.S. and Canada effective May 1, 2026. These panels are not compatible with modern LTE cellular networks, making them unsuitable for new installations moving forward.
According to the notice, this discontinuation is limited specifically to the VISTA-21iP and VISTA-21iPLT models. Other VISTA hybrid panels are not affected and will remain available. However, dealers are advised to stop installing these legacy panels in the U.S. and Canada and begin transitioning to LTE-ready alternatives.
For new system installations, Resideo recommends using the VISTAH3 or the VISTA-21IPLTE. These panels are designed to support LTE cellular communication and align with current carrier requirements. There is also a Canadian version of the VISTAH3, known as the VISTAH3CN, though it is not offered by Alarm Grid.
You can view the recommended alternative panels here:
At Alarm Grid we always recommend dual-path communication for your alarm panel, even though we offer monitoring plans that allow for IP-only monitoring. So, when upgrading to one of these panels, we recommend that you also select a compatible LTE cellular communicator.
Alarm Grid offers options such as the Honeywell Home PROLTE-A2 and PROLTE-V2, both of which are designed to work with supported VISTA and PRO Series systems and provide reliable cellular connectivity.
Shop LTE communicators here:
The key takeaway is that LTE compatibility is now essential for any new security system installation. Even if you do not plan to add a cellular communicator today, selecting a system that supports LTE gives you the flexibility to upgrade in the future without replacing your panel.
By moving to a VISTAH3 or VISTA-21IPLTE panel paired with an LTE communicator, users can ensure continued service and avoid issues tied to outdated cellular technologies and internet outages.
If you are still using a VISTA-21iP system or planning a new installation, now is the time to make the switch. Explore the recommended replacements from Alarm Grid to find the right solution for your installation.
If you need help, reach out to our support team at support@alarmgrid.com. We're here Monday - Friday from 9:00 AM - 8:00 PM Eastern Time. You can also visit our website and chat with a live support agent (9:00 AM - 6:00 PM Eastern Time) or call us at 888-818-7728.