"Increased test complexity" in automated testing means:

1. _Sophisticated test scenarios_: Automated tests can simulate complex, real-world scenarios, testing device behavior in various contexts.

2. _Multi-variable testing_: Automated tests can vary multiple parameters, testing device behavior under different conditions.

3. _Conditional testing_: Automated tests can test device behavior based on specific conditions, such as inputs, outputs, or environmental factors.

4. _Loop testing_: Automated tests can test device behavior under repeated conditions, ensuring consistent performance.

5. _Nested testing_: Automated tests can test device behavior within nested scenarios, simulating real-world complexity.

6. _Dynamic testing_: Automated tests can test device behavior under dynamic conditions, such as changing inputs or environmental factors.

7. _Stress testing_: Automated tests can test device behavior under extreme conditions, ensuring robustness and reliability.

8. _Simulation-based testing_: Automated tests can simulate real-world environments, testing device behavior in a virtual setting.

Increased test complexity in automated testing enables devices to be tested more thoroughly, ensuring they operate correctly in a wide range of real-world scenarios.