V2000-c User Manual !!better!! -

Your unit may have older firmware. Download the latest firmware from the manufacturer’s site (see Section 6 of the manual for update procedure). Alternatively, Cloud Sync is optional hardware; check if your model ends with “-C” (Cloud-ready) vs. “-S” (Standalone).

Doorbell button output or specialized lighting/voice control lines. Troubleshooting & Maintenance v2000-c user manual