This article summarizes how you can mix and match the Tigo TS4s in the same array using the following methods:
- Full deployment
- Selective deployment
- Partial deployment
- Blind deployment
TS4-O and TS4-S models can be deployed in many ways, but they must be monitored by a TAP and CCA connected to the Internet. The monitoring functions enabled by the CCA data logger provide detailed visibility into the module-level operations. With this insight, you can assess performance characteristics and diagnose issues by viewing the system on the Tigo Energy Intelligence (EI) App and/or Portal.
Definitions
The definitions of system deployment options are summarized below.
Full Deployment - TS4-A-O (optimizers) are deployed on every PV module, and monitoring is enabled via the CCA and TAP.
Selective Deployment - A combination of TS4-A-O and TS4-A-S deployed on every PV module, with monitoring enabled via the CCA and TAP.
Partial Deployment - TS4-A-O deployed on some PV modules but not all, with monitoring enabled via the CCA and TAP. For more information, see TS4 Systems - Partial Deployment. 
Blind Deployment - TS4-A-O and/or TS4-A-S deployed without a CCA and TAP (not recommended). This application reduces the TS4 warranty from 25 years to 5 years.
Troubleshooting a system without monitoring is extremely difficult. Therefore, Tigo highly discourages this application.
Disclaimer: The Tigo Limited Warranty stipulates that monitoring functionality must be configured with TAP, CCA, and a connection to the Internet for the system to be eligible for complete warranty coverage. For more information, please review the Tigo Warranty documents in our website's Downloads section.
Summary Table
| TYPE | RECOMMENDED | NOT RECOMMENDED |
| Full Deployment |  |
|
| Selective Deployment | |
|
| Partial Deployment | |
|
|
Blind Deployment |
If you have any questions about using TS4s in various deployment applications, don't hesitate to contact our support team.