The ION 7700 is two generations old, originally a 90’s meter. It’s a good meter, but due to its age and lack of parts, it’s difficult to repair when it fails. In addition, it can only be integrated into an ION system.
Generally, if we come across an ION 7700, we recommend an upgrade. Technically we can integrate it, but the cost of integration merits a discussion of upgrading to one of its replacements (ION 7550 or ION 7650).