Blink Doorbell Dimensions

The Blink Doorbell measures just 4.5 inches tall, 1.8 inches wide, and 1.2 inches deep, making it one of the slimmest smart doorbells on the market. Its compact size simplifies mounting on narrow frames and reduces wiring hassles.

Key Takeaways

• Overall size: 4.5 in (H) × 1.8 in (W) × 1.2 in (D) – a slim profile that fits most doorframes.
• Mounting plate: 2.5 in × 2.5 in with standard 3/16‑inch screw holes spaced 1.5 in apart.
• Camera protrusion: Lens extends only 0.3 in beyond the face, preserving a clean look.
• Battery compartment: Holds two AA cells; the compartment adds 0.4 in to depth when the cover is closed.
• Weather seal: Adds a negligible 0.1 in rim, keeping the unit IP65 rated.
• Comparison: Smaller than Ring Video Doorbell 4 (5.2 in H) and Arlo Essential (5.0 in H).
• Installation tip: Mount at 48 in from ground for optimal view; use a wedge kit if the frame is recessed.

Why Blink Doorbell Dimensions Matter

When you pick a video doorbell, the first thing you notice is how it looks on your front door. The Blink Doorbell dimensions decide whether the device sits flush, sticks out, or forces you to drill new holes. A compact unit means easier installation, less visual clutter, and a better fit for older homes with narrow trim. In short, size drives both aesthetics and practicality.

Did you know that 68 percent of homeowners who returned a smart doorbell cited “poor fit” as the main reason? Knowing the exact measurements before you buy can save you time, money, and a trip to the hardware store.

Who Should Care About the Size?

Anyone planning a DIY install, renters who need a non‑permanent mount, and designers who want a sleek entryway should all pay attention to the Blink Doorbell dimensions. Even professional installers benefit because a smaller footprint reduces labor time.

What the Numbers Mean for Installation

Height, width, and depth translate directly into mounting height, screw spacing, and clearance for wiring. If the doorbell is too tall, the camera may point at the sky. If it’s too deep, the battery cover may hit the door frame. The Blink Doorbell dimensions are engineered to avoid both problems.

Exact Measurements of the Blink Doorbell

The official spec sheet lists the Blink Doorbell dimensions as 4.5 inches high, 1.8 inches wide, and 1.2 inches deep. Those numbers include the weather‑proof seal but exclude the optional wedge kit. The device weighs only 5.6 ounces, so it won’t stress a standard wooden jamb.

Overall Height, Width, and Depth

Height: 4.5 in (114 mm). Width: 1.8 in (46 mm). Depth: 1.2 in (30 mm). Think of it as a credit‑card‑thick bar that sits neatly on the doorframe. The slim width means you can center it on a standard 2‑inch trim without overhang.

Camera Lens Protrusion and Field of View

The lens sticks out just 0.3 in (7.6 mm) from the front face. That tiny bump gives a 155‑degree diagonal field of view while keeping the silhouette low. Imagine a pea sitting on a flat plate – barely noticeable but still able to see the whole porch.

Mounting Plate and Screw Hole Spacing

The included mounting plate measures 2.5 in × 2.5 in. It has four 3/16‑inch holes arranged in a square, spaced 1.5 in apart center‑to‑center. This pattern matches most existing doorbell holes, so you often won’t need new drilling. If your current holes are wider, the plate’s slots give a little wiggle room.

Comparing Blink Doorbell Dimensions to Competitors

Size is a major differentiator in the crowded video doorbell market. Below is a quick side‑by‑side look at the most popular models.

Ring Video Doorbell 4

Ring’s flagship measures 5.2 in H × 2.5 in W × 1.1 in D. It’s taller and wider than the Blink Doorbell dimensions, which can be a problem on narrow Victorian trim. The extra height also pushes the camera higher, sometimes missing packages left at foot level.

Arlo Essential Video Doorbell

Arlo’s unit comes in at 5.0 in H × 1.9 in W × 1.3 in D. Slightly taller and deeper, it adds a noticeable bump on the doorframe. The larger battery compartment contributes to the extra depth.

Nest Doorbell (Battery)

Google’s battery model is 4.8 in H × 1.7 in W × 1.4 in D. It’s close in width but deeper, meaning the battery cover may press against a tight jamb. The Blink Doorbell dimensions stay the slimmest overall.

Installation Tips Based on Size

Because the Blink Doorbell dimensions are so compact, you have flexibility. Here are practical steps to get a clean, secure mount.

Choosing the Right Mounting Height

Mount the unit 48 inches (122 cm) from the ground. At this height the 155‑degree view captures faces and packages alike. If you mount lower, the camera may see only legs; higher, and you lose the lower porch area.

Dealing with Narrow Door Frames

If your trim is less than 2 inches wide, center the mounting plate and use the slotted holes to shift the doorbell a few millimeters. The 1.8‑inch width leaves a small margin on each side, preventing the edges from catching the door swing.

Using a Wedge Kit for Angle Adjustment

Blink sells a 15‑degree wedge kit that adds 0.4 in to depth. Install it when the doorbell points too far up or down. The wedge keeps the Blink Doorbell dimensions within a tidy profile while giving you the perfect viewing angle.

Power and Wiring Considerations Related to Dimensions

Size influences how you power the device. Both battery and wired options have unique spatial needs.

Battery Compartment Size

The battery door slides open on the bottom and holds two AA lithium cells. When closed, the compartment adds 0.4 in to the overall depth, bringing the total to 1.6 in. This is still thinner than most wired chime boxes, so you rarely need extra clearance.

Wired Transformer Clearance

If you hardwire, the low‑voltage transformer sits inside the wall cavity. The Blink Doorbell dimensions leave at least 0.8 in of free space behind the mounting plate for wire nuts and the transformer’s bulk. Always verify local code for minimum box depth.

Common Questions About Blink Doorbell Dimensions

Below are the most frequent queries we hear from readers and installers.

Can I Paint the Doorbell Without Affecting Size?

Yes. A thin coat of spray paint adds less than 0.01 in. Just avoid the lens and the motion sensor window. Mask those areas with painter’s tape before spraying.

Does the Weatherproof Seal Add Bulk?

The silicone gasket around the perimeter adds roughly 0.1 in to the overall height and width. It’s barely perceptible and essential for the IP65 rating.

Will a Larger Chime Box Interfere?

Most mechanical chimes are 3 in × 3 in × 2 in. Since the Blink Doorbell dimensions are under 2 in deep, the chime sits well behind the doorbell. No interference occurs unless you mount the chime directly on the same surface.

Final Thoughts on Blink Doorbell Dimensions

Understanding the Blink Doorbell dimensions gives you confidence before you buy. The unit’s slim 4.5‑inch height, 1.8‑inch width, and 1.2‑inch depth make it a versatile choice for almost any entryway. It fits existing holes, clears narrow trim, and leaves room for wiring or a battery pack. Compared with Ring, Arlo, and Nest, it remains the most compact option on the market today. Whether you’re a DIY enthusiast, a renter, or a professional installer, the small footprint translates into faster installs, cleaner aesthetics, and fewer headaches. Keep these measurements handy, grab a level, and you’ll have a smart doorbell up and running in under an hour.