tolviviov WiFi Door Alarm System, Wireless DIY Smart Home Security System, with Phone APP Alert, 8 Pieces-Kit (Alarm Siren, Door Window Sensor, Remote), Work with Alexa, for House, Apartment, by tolviviov

What you get in the box and who it’s for

I set up the Tolviviov alarm in a small house and then moved it into a detached garage for range testing. It’s an 8-piece starter kit: one plug-in siren hub, five door/window contact sensors, and two key-fob remotes. There’s no keypad in the box, but the system supports expansion to 20 sensors and five remotes or keypads if you need to grow later. It runs on 2.4 GHz Wi‑Fi only and doesn’t require a subscription, which makes it appealing for renters, first-time DIYers, and anyone who wants simple coverage without a contract.

If you’re looking for professional monitoring, cellular backup, or high-end sirens, this isn’t that. If you want a low-cost, app-driven system you can stick up in minutes and manage from anywhere, this checks the right boxes.

Setup and installation

The experience starts smoothly. I plugged the siren hub into AC power (it needs to stay connected to power; the built-in battery is an emergency backup), launched the app, and joined it to a 2.4 GHz network. The app walks you through pairing each contact sensor one by one. It’s quick and purposely “hand-holding” in a good way—great for non-technical users.

The sensors are the standard two-piece magnet-and-reed design. The kit includes pre-applied adhesive and extra sticky pads. A few install notes from testing:

• Alignment is forgiving. I mounted a couple of sensors at a slight angle and with roughly a 1-inch gap; they still triggered reliably.
• Clean the surface before sticking. On rough or dusty frames, I’d use a drop of super-strong tape or small screws (not included) for insurance.
• Label as you go. The app lets you name each sensor, but it’s easiest if you add and name them immediately after installing so you know which is which without playing guess-and-test later.

All told, I had five openings covered and the system configured in about 20 minutes.

App experience and everyday use

The app centers around Away, Home, and Disarm modes, with per-sensor configuration and push notifications when a door or window opens. In practice:

• Notifications were fast. I saw near-instant alerts on my phone whether the siren was armed or set to a quiet “chime/notify” behavior.
• You can mute the siren and still get phone alerts, which is useful for monitoring a garage door, tracking a child’s room door overnight, or keeping tabs while selling a home and letting agents in.
• Sharing access is straightforward. I added a second user so multiple people could arm/disarm and see alerts.

A small nit: mapping sensor names to physical locations can be clumsy if you add everything first and label later. Trip each sensor during setup and you’ll save time. The app is basic but does the essentials well. I didn’t run into crashes or connectivity snags once everything was on 2.4 GHz.

Hardware and sound

The hub’s siren is loud enough to be a deterrent in apartments and smaller homes. I wouldn’t call it deafening, and the timbre is a bit tinny, but volume is adjustable and it does the job. There are several chime/alert tones to choose from, which helps differentiate entry beeps from alarm sounds. The remotes are handy for quick arm/disarm without opening the app; they’re lightweight, with buttons that are easy to press. As with most key fobs, I’d avoid tossing them loose in a bag where they can be pressed accidentally.

The contact sensors are compact and blend in decently on white trim. Battery type is the common coin-cell variety; I didn’t have long enough time-on-device to drain them, but the app reports battery status and the low-power design should last many months in normal use. Replacements are inexpensive and easy to source.

Range and reliability

Range impressed me for a budget Wi‑Fi kit. With the hub near the center of a single-story home, I had no issues reaching every door and window I installed. I then moved one sensor to a detached garage roughly 80 feet away with two walls in between; the sensor still reported events and the app notified me quickly. As always with Wi‑Fi, your mileage depends on your router placement and building materials, but the radio performance here is better than I expected.

In day-to-day use, the system remained connected and responsive. I never saw a delay long enough to miss a door opening. The flip side: because this is Wi‑Fi only, if your router or internet is down, you won’t get remote notifications. The local siren will still sound if AC power is out (thanks to the internal battery), but once your network drops, the “smart” part goes away until it returns.

Smart home integration

I linked the system to Alexa and used voice to arm in Away or Home mode and to disarm (with a PIN). Voice control worked reliably and is useful when heading out the door with hands full. Google Assistant support is available as well. I didn’t see deep automation hooks beyond basic arming and status, but for most households that’s enough.

Power and backup

The hub must remain plugged in. That’s a pro for consistent performance and a con if you hoped to place the siren hub somewhere without an outlet. The internal battery is meant for outages and tested out as advertised; after pulling the plug, the unit kept running for about a workday and continued to trip the siren and sensors. Be aware, though, that remote alerts still rely on your router and ISP—no cellular fallback here.

Expandability and accessories

Out of the box you get coverage for five openings. The ability to add up to 20 sensors is the right sweet spot for small to medium homes. I added a keypad accessory later for a front-door entry delay flow and found pairing to be as painless as the sensors. Motion sensors, water detectors, and a wireless doorbell are supported if you want to broaden coverage. It’s an easy way to grow into more complete protection over time without replacing the core kit.

What could be better

No product at this price avoids trade-offs. Here are the ones I noticed:

• 2.4 GHz only. It’s common for IoT devices, but if your router hides or merges bands, you may need to temporarily split SSIDs to onboard.
• Siren character. Loud, yes, but the sound quality is thin. It’s adequate for small homes and apartments; for a large space, you may want an additional siren or a different class of system.
• App ergonomics. Sensor naming is clunky if you don’t plan it during install. I’d also like clearer per-device status at a glance when arming and better feedback during pairing.
• Power reliance. AC power is required, and there’s no cellular option. If you want alerts during Internet outages, this isn’t the right category of system.

Who it’s best for

• Renters and first-time DIYers who want a no-contract alarm they can install in minutes and remove without drilling.
• Small to mid-size homes, townhomes, and apartments where a single hub can cover all openings.
• Care scenarios: monitoring an exterior door for an elderly parent or a child’s bedroom door at night—especially using silent notify mode.
• Outbuildings close to the home (garages, sheds) within reasonable Wi‑Fi range.

If you need whole‑home siren coverage in a large property, professional monitoring, cellular redundancy, or an integrated camera ecosystem in one app, you’ll likely outgrow this kit.

The bottom line

The Tolviviov alarm nails the fundamentals: easy install, reliable alerts, decent range, and useful smart features without a subscription. It’s not a fortress-grade solution, but it delivers meaningful peace of mind at a very approachable price, and the ability to expand sensors and add a keypad lets you tailor it to your space.

Recommendation: I recommend this kit for budget-conscious users who want straightforward, app-driven entry monitoring with Alexa/Google voice control and room to expand. It’s a great starter system for apartments and small homes, and a practical add-on for monitoring specific doors or windows in larger properties. If your needs include professional monitoring, cellular backup, or high-output sirens across a big footprint, look higher up the ladder; otherwise, this system is an easy win.