Does it need Wi-Fi or does it work on its own?

The core function — lighting up on motion in the dark — works fully on its own, with no network. Bluetooth BLE is only needed if you want to connect it to the Xiaomi Home app to set brightness, light-on duration and automations.

Can it be controlled by voice (Alexa, Google)?

Confirmed control is via the Xiaomi Home (Mi Home) app over Bluetooth. Voice assistants are not confirmed for this model, so we recommend relying on the motion sensor and the in-app settings.

How long do the batteries last?

With 3 AA batteries (not included), runtime reaches up to ~180 days at full brightness and up to ~17 months if the light is used mostly as a sensor with a short light-on duration.

Does it turn on during the day when it's bright?

No. Thanks to the ambient-light sensor, it only switches on when it detects motion IN low light. During the day or in an already-lit room it stays off and saves the batteries.

How do I mount it and where can I put it?

You can stand it freely on a shelf or nightstand, or fix it to the wall with the included adhesive base. The magnetic head rotates 360° so you can aim the light at stairs, the floor or a doorway.

Xiaomi Mi Night Light 2 Bluetooth BHR5278GL

Name: Xiaomi Mi Motion-Activated Night Light 2 (Bluetooth) BHR5278GL
Brand: Xiaomi
SKU: BHR5278GL
Price: 249 MDL
Availability: InStock

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Compatibility

Works with these ecosystems

Protocols

What it is, who it's for, what it does

About this product

Down the hallway to the bathroom, beside the bed or in a walk-in closet, this Xiaomi night light switches on by itself only when it senses movement IN the dark, thanks to an infrared sensor (120° field, up to 6 m ahead) paired with an ambient-light sensor. The warm 2800K glow has no visible flicker and no harmful blue light, so it never dazzles you at night. The magnetic head rotates a full 360°, and the adhesive base lets you wall-mount it or stand it freely. Powered by 3 AA batteries (not included), it runs up to ~180 days at full brightness. Over Bluetooth BLE it pairs with the Xiaomi Home (Mi Home) app for brightness, light-on duration and automations. 24 months official warranty.

Delivery
Delivery 50 MDL
Returns
14 days to return
Warranty
24 months

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CasaSmart essentials

What it works with, what it needs, what you can do

Verified compatibility

We test every device for these ecosystems. For non-standard integrations contact us before ordering.

Home Assistant
Zigbee
Matter
KNX
Wi-Fi

Install & requirements

What you need on your side and what we deliver.

Zigbee hub or Matter gateway for wireless variants
65 mm back-box or DIN panel for wired variants
Local setup on Home Assistant — included in install

Request install quote

Smart scenarios

Three typical automations we set up after the install.

01Morning: warm light + blinds up + climate at 22 °C
02Leaving: lights off, arm sensors, close the gas
03Evening: warm ambient + cinema scene

Where it works

Use cases

Home

On the night-time route to the bathroom or kitchen, the light comes on at movement and softly lights the stairs and floor, with no ceiling lamp to chase away your sleep.

Home

The warm 2800K light, free of flicker and harmful blue light, helps a child find their way at night without fully waking up and without being dazzled.

Home

With no cables and no nearby socket, fix it with the adhesive base in a wardrobe or storage room; the 360° head aims the light straight at the shelves when you open the door.

For the installer

Technical specifications

full spec · wiring · datasheet

Other

Type: Motion-activated night light (motion + ambient-light sensor)
Luminous flux: 2.5 – 25 lm (Low / High)
Motion sensor: Infrared (Fresnel lens), 120° horizontal field, up to 6 m front / 2.5 m sides
Light sensor: Yes – lights only in low ambient light when motion detected
Height: ≈ 62 mm
Mounting: Free-standing or wall-mount via adhesive base; magnetic head, 360° rotatable
Operating frequency: 2402 – 2480 MHz

Physical

Color temperature: 2800K warm yellow, no visible flicker, no harmful blue light
Diameter: ≈ 80 mm (Ø8 cm)
Weight: ≈ 72 g (device only); ~121 g with packaging

Wireless

Wireless connectivity: Bluetooth 4.2 BLE; pairs to Mi Home / Xiaomi Home app
Control via app: Mi Home / Xiaomi Home: on/off, brightness, light-on duration, smart-home automations

Power

Power: 3 × AA batteries (not included), rated 4.5 V
Power: 0.35 W
Battery life: Up to ~180 days at highest brightness; up to ~17 months used as sensor only

Support

Frequently asked questions

Does it need Wi-Fi or does it work on its own?
The core function — lighting up on motion in the dark — works fully on its own, with no network. Bluetooth BLE is only needed if you want to connect it to the Xiaomi Home app to set brightness, light-on duration and automations.
Can it be controlled by voice (Alexa, Google)?
Confirmed control is via the Xiaomi Home (Mi Home) app over Bluetooth. Voice assistants are not confirmed for this model, so we recommend relying on the motion sensor and the in-app settings.
How long do the batteries last?
With 3 AA batteries (not included), runtime reaches up to ~180 days at full brightness and up to ~17 months if the light is used mostly as a sensor with a short light-on duration.
Does it turn on during the day when it's bright?
No. Thanks to the ambient-light sensor, it only switches on when it detects motion IN low light. During the day or in an already-lit room it stays off and saves the batteries.
How do I mount it and where can I put it?
You can stand it freely on a shelf or nightstand, or fix it to the wall with the included adhesive base. The magnetic head rotates 360° so you can aim the light at stairs, the floor or a doorway.

Same category

Questions about this product?

A CasaSmart manager calls you within 1–2 working hours and answers anything — compatibility, install, alternatives.

+373 60 944 922

Updated: 13 June 2026· reviewed by CasaSmart Expert Team

Compatibility