BN-LINK 7-Day Astronomical In-Wall Timer Switch, 18 Programs, Blue Backlight

Sunrise- and sunset-based scheduling automatically adjusts lighting throughout the year, so you can set a routine without changing its on and off times every day. The BN-LINK in-wall timer also supports weekly schedules and manual control from the switch.

Use it for porch, entryway, hallway, garage, or patio lights, or other compatible lighting loads. Installation requires a neutral wire, and the switch is designed for single-pole wiring.

How it fits

Choose sunrise and sunset as scheduled events, or build a custom weekly routine with up to 18 on/off programs. Programs can be assigned to individual days or preset day combinations, with intervals as short as one minute. This gives you options for a porch light that follows daylight, a hallway lamp on a regular evening schedule, or different lighting times across the week.

The astronomical function calculates sunrise and sunset using the date, time, and selected time zone. Six preset time zones are available, so accurate setup helps align the schedule with your location. Daylight Saving Time mode adjusts the clock when the season changes, while Random mode varies the schedule when you want lights to appear less predictable. For a quick override, switch between AUTO scheduling and MANUAL on/off control using the front button.

This is an in-wall control for indoor installation that can operate indoor or outdoor lighting loads, such as porch, patio, or landscape lights. It offers a more automated approach than a basic timer with fixed daily on/off times, especially when you want lighting tied to changing daylight.

Pros

The main benefit is combining astronomical scheduling with flexible weekly programming in one wall switch. Once sunrise and sunset are selected in the schedule, the automatic adjustment reduces the need to reset fixed lighting times as daylight changes. The blue backlight also makes the controls easier to see when programming in a dim room, and a built-in backup battery retains settings during a power outage.

Customer feedback highlights use for porch lighting and appreciates the automatic scheduling. Experiences with programming and instructions are mixed, so careful setup of the date, time, and time zone is important for the intended schedule. The front-button manual mode provides a direct way to operate the lights when you want to override automation.

Technical overview

• Type: 7-day programmable astronomical in-wall timer switch
• Programs: Up to 18 on/off programs, intervals as short as one minute
• Control: AUTO and MANUAL modes, Random mode, and Daylight Saving Time adjustment
• Electrical rating: 15A/1,875W resistive, 125 VAC, 60 Hz
• Installation: Single-pole wiring, neutral wire required, indoor installation
• Certification: ETL listed
• Dimensions: 2.83 x 1.57 x 4.53 inches
• Included: Wire nuts

Use the switch with a neutral wire and single-pole wiring, and keep the connected load within the applicable rating. Its listed ratings also include 10A/1,250W for tungsten and ballast loads, and 1/2 HP.

Final verdict

For a lighting routine that should follow sunrise and sunset instead of repeating the same fixed times, this BN-LINK timer combines astronomical control, weekly scheduling, and a manual override in a single-pole wall switch. It is a practical fit for indoor-installed controls serving porch, entryway, garage, patio, and other compatible lights, particularly when seasonal daylight changes make a fixed schedule less convenient.