LLC Lighting Control Systems & Automation

Question 1

What is the primary function of a photocell (dusk-to-dawn sensor) in a landscape lighting system?

Accepted Answer

Automatically turns lights on at dusk and off at dawn based on ambient light levels

Answer

Measures the color temperature of installed fixtures

Answer

Controls the dimming level of individual fixtures

Answer

Monitors transformer voltage output throughout the night

Question 2

Which type of timer is most reliable for landscape lighting because it automatically adjusts on/off times throughout the year?

Accepted Answer

Astronomic (astro) timer

Answer

Mechanical dial timer

Answer

Simple 24-hour digital timer

Answer

Countdown timer

Question 3

In a low-voltage landscape lighting transformer, what does the 'timer' feature control?

Accepted Answer

The scheduled on and off times for the lighting zones

Answer

The wattage output of connected fixtures

Answer

The voltage level sent to each individual fixture

Answer

The ground fault circuit protection threshold

Question 4

What is the main advantage of using a multi-zone landscape lighting transformer?

Accepted Answer

It allows different lighting areas to be controlled independently with separate schedules or settings

Answer

It increases the total wattage capacity beyond a single-zone unit

Answer

It eliminates the need for photocell sensors in the system

Answer

It converts AC power to DC power more efficiently than single-zone units

Question 5

Which control method allows a homeowner to adjust landscape lighting using a smartphone app?

Accepted Answer

Smart home/Wi-Fi integrated lighting controller

Answer

Mechanical twist timer

Answer

Photocell with manual override

Answer

Analog voltage regulator

Question 6

What is a 'manual override' feature on a landscape lighting timer primarily used for?

Accepted Answer

To temporarily turn the lights on or off outside of the programmed schedule

Answer

To permanently disable the photocell sensor

Answer

To reset the transformer voltage to factory defaults

Answer

To bypass GFCI protection during installation

Question 7

When integrating landscape lighting with a home automation system (e.g., Control4, Lutron), which protocol is commonly used for low-voltage landscape lighting controllers?

Accepted Answer

0-10V dimming or proprietary smart protocols (e.g., Z-Wave, Zigbee, Wi-Fi)

Answer

RS-232 serial only

Answer

DMX512

Answer

HDMI