If you already know roughly what a modular switch is and you are now trying to decide what to actually install, this is the comparison you need. (If you are not sure what “modular” means in the first place, start with our guide to what a modular switch is and come back.)

There are really two separate decisions here, and most guides blur them together:

1. The type: a non-modular “piano” switch, or a modern modular switch?
2. If you go modular, the mounting: surface-mounted (a box on the wall) or flush/concealed (recessed into the wall)?

Getting these straight matters, because the second one — mounting — is widely misunderstood, and it often decides what is actually practical for your space. Let us take them in turn.

Quick answer: A piano switch is the older, self-contained switch named for its large rocker that tilts like a piano key; it is cheap and surface-mounted. A modular switch is built from separate modules that clip into a frame under a decorative plate, giving a flush, modern look and the flexibility to change or add modules later. Modular costs more but looks better and is easier to repair and expand. For most homes and offices today, modular is the default; piano switches still win on pure cost and quick, no-wall-work installation.

Decision 1 — Piano (non-modular) vs modular

Non-modular “piano” switches

The older style is the piano switch — named in India for the way its large rocker tilts like a piano key. These are self-contained switches, and the setup is refreshingly simple: you buy the switches, screw them onto a board, surface-mount the board on the wall, and run the cable. No wall-cutting, no planning of recesses, no concealed boxes.

That simplicity is the piano switch’s real, often-overlooked advantage. If you need to add a point quickly — in a utility area, a shop, a village or low-income setting, a temporary or under-construction space — a piano board is cheap, needs no wall work, and goes up with four screws. For that job, nothing beats it on cost and speed.

The trade-offs: it protrudes more from the wall, the look is utilitarian, and finish options are limited. The switch mechanics are basic. It is the budget, no-frills choice.

(You may also come across “semi-modular” switches — a cheaper, screw-fixed cousin of modular, now rare and mostly seen where a builder pre-installed them in budget flats. They are uncommon enough that they are not a real choice for most buyers, so we will not dwell on them here.)

Modular switches

Modular switches are built from standardised modules that clip into a frame, covered by a decorative plate. The result is a flush, slim, finished look, with a wide range of colours and finishes including glass and matte — and the flexibility to change a single module or add a point later. They cost more than piano switches, because you are buying a quality system rather than a basic single-piece switch.

For almost any space where the switchboard is visible and you care how it looks, modular is the sensible default. The real follow-up question is not whether modular, but how it is mounted — which is Decision 2.

Decision 2 — Surface-mount vs flush-mount (for modular)

This is the part most guides skip, and it matters. Modular switches come in two mounting styles, usually at similar cost:

Flush / concealed mounting

The back-box is recessed into the wall, so the plate sits flush against it — the clean, built-in look most people picture when they think “modular.” The catch: it requires wall work. Slots and recesses have to be cut (chased) into the wall for the boxes, and conduit run. That is straightforward during new construction or a full renovation, when the walls are open or being worked on anyway. It is messy and disruptive to do in a finished, occupied space.

Surface mounting

Here the box sits on the wall surface and is screwed on — like a piano board, but holding modular switches. You still get the good-looking modular switch and its finishes; the only difference is the box protrudes slightly instead of being recessed.

The big advantage: no wall-cutting needed. This is the answer for anyone who wants the modular look but cannot or does not want to chase channels into finished walls — most commonly when renovating or upgrading an existing place without tearing up the walls. You keep the modular aesthetic and skip the construction work.

So the common assumption that “modular means you have to cut into the wall” is simply not true. If your walls are already finished, surface-mount modular gives you the look without the mess.

What do they cost? (indicative prices)

Price is often the deciding factor, so here is a rough, real-world guide. These are indicative MRP ranges per switch — retailers usually give a discount on MRP, so you will often pay less:

Type	Example	Indicative price (per switch)
Piano switch	Anchor Penta and similar brands	₹20 – ₹60
Standard modular	Anchor Roma-type	₹70 – ₹150
Premium modular	NORISYS Cube series	₹150 – ₹400

A few things to note. Piano switches are dramatically cheaper per point, which is why they still dominate budget and utility installations. Standard modular (Anchor Roma and its many equivalents) is the sensible middle ground for most homes. Premium modular ranges climb higher, mostly for the finish and design rather than better switching. Remember these are MRP figures — actual shop prices are usually lower after the standard retailer discount, so treat them as a relative guide rather than exact quotes.

Putting it together: which should you choose?

• New home or full renovation, walls open, you care about looks: modular, flush-mounted. The premium, built-in result.
• Existing finished space, want the modular look without wall work: modular, surface-mounted. Same switches, box on the wall, no chasing.
• Budget point, utility/temporary space, looks not important, quick add-on: piano switches on a surface board. Cheapest and fastest.

Reliability, by the way, tracks brand and build quality far more than it tracks piano-vs-modular — a good piano switch outlasts a bad modular one. Buy a reputable brand whichever route you take.

If you have settled on modular, the next questions are which brand and what size — covered in our guides on the best modular switches in India and modular switch sizes (1M, 2M, 3M) explained.

Frequently asked questions

Which type of switch is better, piano or modular?

For most homes and offices today, modular is better — it looks cleaner, lets you replace or add a single module without redoing the board, and comes in far more finishes. Piano switches are “better” only in specific cases: tight budgets, utility or temporary spaces, or quick additions where no wall work is wanted. Neither is better in the abstract; it depends on whether looks and flexibility (modular) or lowest cost and simplest fitting (piano) matter more for your space.

Is a piano switch the same as a modular switch?

No. A piano switch is a self-contained unit — the switch and its cover are one piece, surface-mounted. A modular switch is a system of separate modules that clip into a frame under a decorative plate. The confusion arises because “piano” describes the rocker style (the large tilting key), while “modular” describes the construction (built from modules). They are different approaches, and modular is the more modern one.

What is the difference between a modular switch and a standard (conventional) switch?

A standard or conventional switch — the piano type — is a single fixed unit that sits proud of the wall. A modular switch is assembled from standardised modules in a frame, sits flush, and can be mixed (switches, sockets, regulators) on one plate and changed individually. The practical differences are appearance (modular looks neater), repairability (modular lets you swap one module), and cost (modular is pricier).

What are the two main types of switches used in homes?

In Indian homes, the two main types are piano (non-modular) switches and modular switches. Piano switches are the older, cheaper, surface-mounted style; modular switches are the modern standard, built from modules under a decorative plate. Most new construction and renovation uses modular; piano switches remain common in budget, utility, and older installations.

Are modular switches worth the extra cost?

For any space where the switchboard is visible and you care how it looks, yes — the better appearance, easier repairs, and ability to expand usually justify the modest extra cost over a piano switch. For hidden utility points or very tight budgets, the cheaper piano switch is the sensible choice.

A quick safety note

Whichever you choose, mains wiring and switch installation should be done by a qualified electrician. Changing a cosmetic plate is fine to do yourself; connecting live circuits is not. If an existing switch sparks, heats up, or behaves oddly, switch off the circuit and call an electrician rather than opening a live board.