[Legacy] Tigo Gateway Placement – Tigo Help Center

Overview

The Tigo Gateway is a legacy communication device used with older Tigo monitoring systems. Proper Gateway placement is essential for reliable communication with Tigo optimizers and accurate module-level monitoring.

The number of Gateways required depends on:

Total module count
Array size and layout
Physical obstructions
Distance between array sections

For newer systems using the Tigo Access Point (TAP):

TAP vs. Gateway
TAP Placement Requirements

Gateway Capacity and Range

Each Gateway can communicate with up to 120 Tigo optimizers.

For reliable communication, all optimizers should be located within 50 feet (15 m) of the Gateway and have a clear line of sight to the device.

If any portions of the array are more than 50 feet apart, install additional Gateways.

A single Cloud Connect, Cloud Connect Advanced (CCA), or MMU can support up to seven Gateways connected on the same RS-485 communication network.

When Additional Gateways Are Required

Install additional Gateways when:

The system contains more than 120 monitored modules
Sections of the array are more than 50 feet (15 m) from the nearest Gateway
Physical obstructions block communication
The array is divided across multiple roof planes or separate buildings

Systems with east-facing and west-facing arrays typically require a Gateway on each roof plane.

Gateways in series

Gateways in series (Daisy-chained to a single RS-485 cable)

Avoid Obstructions

Communication performance can be reduced by obstacles that block the signal path between the Gateway and the optimizers.

Common obstructions include:

Chimneys
Dormers
HVAC equipment
Parapet walls
Significant roof elevation changes

As a general guideline, any height change greater than 3 feet (1 m) should be treated as a potential obstruction.

If communication may be blocked, relocate the Gateway or add an additional Gateway to provide coverage.

Gateways placed around an obstruction

Residential: Example Gateway Placements:

L-shaped house with one Gateway (location = green arrow)

L-shaped house with one Gateway

2. L-shaped house with a dormer, which may need 2 Gateways.

L-shaped house with dormer and two Gateways

3. L-shaped homes and systems with multiple array orientations may require additional Gateways, as radio signals typically do not penetrate roofing materials effectively.

L-shaped house with multiple orientations

4. Multiple rooftop arrays separated by significant distance

Installation Requirements

For best results:

Mount the Gateway directly to a module frame whenever possible
Position the Gateway close to the center of the area it serves
Maintain clear communication paths to all monitored modules
Avoid installing Gateways in attics or locations where roofing materials may weaken the signal