Bosch Smart Home

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Your key to the smart optimisation of indoor air

Your home- somewhere you place great value on safety and enjoyment- it needs to be somewhere that you feel comfortable. The Twinguard Starter Kit enables you to ensure the quality of air in your home is optimised according to your needs. The kit includes everything you need to set up a system for smart air monitoring and gives you the ability to add more Twinguard's for further protection at home.

Provides warnings in the event of smoke or impure air: Twinguard

  • Reliable- provides imediate notifications of danger and enables actions such as notifying the fire brigade directly from the app
  • Networked- in the event of air quality deviations, a message is sent to your smartphone
  • Unobtrusive- its streamlined designfits in ith the style of your interior decor
  • Flexible- monitors for smoke as well as monitoring temperature, humidity and air quality for Volatile Organic Compounds in indoor air
  • Smart- connected to your smartphone via the Twinguard app

Twinguard Starter Set

179.95GBP * Including 20% VAT
Delivery: 3 - 4 working days with UPS
  • Easy starting point, with all the components necessary for you to start securing your home
  • Fire alarms are transmitted over the gateway to any connected Twinguard
  • Reliable smoke detection with professional Dual Ray technology
  • Optimum smoke sensor sensitivity for each room type
  • Continuous measurement of temperature, relative humidity and air purity
  • Recommendations for healthy air quality and notifications when values are outside the optimum ranges
  • Up to 24 Twinguards can be connected to one gateway

Everything you need for safe and healthy air at home: The smart smoke detector from Bosch Smart Home in the starter package.

Twinguard App

  • Serves as central indicator and control element for all integrated Twinguards
  • Ensures continuous access to current and historical air quality measurement data from your Twinguards – from at home and on the go
  • Reliably forwards alarms from the Twinguard to your smartphone
  • Makes it possible to trigger test alarms from your smartphone
  • Helps create and manage rooms and devices
  • Compatible with smartphones with Android 4.4 or iOS 8 or higher

Twinguard Starter Set

Technical Data

Smoke detector with air quality sensor starter set
Article number
550 g
Dimensions packaging (H x W x D)
182 x 271,5 x 102,75 mm
Article number
Dimensions packaging (H x W x D)
138 x 138 x 41 mm
Country of origin
6 x 1.5 V AA alkaline batteries (replaceable)
Battery life
2 years (typical)
Wireless frequency
2,4 GHz ISM-Band
Wi-fi free field range
≥ 100 m
Transmitting power
max. 8 dBm
Degree of protection
Ambient temperature
5 °C ... 30 °C
93% (non-condensing)
Bearing temperature
-5 °C ... +30 °C
Number of wireless connections to a gateway
max. 24
Article number
Dimensions (H x W x D)
88 x 90 x 29 mm
Country of origin
USB mains adapter, LAN (Ethernet, RJ45)
Power consumption
max. 500 mA at 5V
Wireless frequency
2,4 GHz ISM-Band
Wi-fi free field range
≥ 100 m
Transmitting power
max. 8 dBm
Degree of protection
15 % ... 85 %
Bearing temperature
-20 °C ... +70 °C

Box contents

  • 1 Twinguard smoke detector
  • 6 alkaline AA batteries included and installed in the detector
  • Installation plate for ceiling mounting with mounting materials (2 screws, 2 wall plugs)
  • Installation instructions
  • 1 Gateway
  • 1 Mains adapter
  • Cable for connecting the gateway to router (RJ45)
  • Screws and wall plugs for wall mounting
  • Notes about battery disposal

    In conjunction with the sale of batteries or supply of devices that contain batteries, we are obligated to point out the following:

    Used batteries should not be disposed of in the household rubbish. Consumers are obligated to take batteries to a suitable collection point provided by retailers or municipalities. You can return used batteries of models that we stock or have stocked in our product line to our shipping warehouse (Bosch Thermotechnik GmbH, Spare parts logistics, Justus-Kilian-Strasse 1, D-35457 Lollar) at no charge.

    The symbols on the batteries have the following meaning:

    The symbol of the garbage can crossed out by an X means that the battery must not be disposed of in household waste.

    Pb = Battery contains more than 0.004 percent lead by mass
    Cd = Battery contains more than 0.002 percent cadmium by mass
    Hg = Battery contains more than 0.0005 percent mercury by mass

    Please note the instructions above.

Twinguard: System requirements

Ideally equipped to alert you to potential fires and poor air quality. These components allow you to breathe freely and easily.

Twinguard App

You can conveniently use the Twinguard app on any smartphone with Android 4.4 or higher or iPhone with iOS 8 or higher.

Twinguard Starter Set

The Twinguard Starter Set includes one gateway and one Twinguard and is the basis for installing additional Twinguards.


The Twinguard can be installed in just a few steps. Simply use the Bosch Smart Home App, which guides you step by step through the integration of the Twinguard. If you still need additional support, just watch the step-by-step instructions in our installation video.


Can I pre-order the Bosch Smart Home Twinguard Starter Set?

If you register as a customer, you can reserve the product on the respective product page ("Reserve product"). We will provide you with exclusive notification as soon as your Bosch Smart Home Twinguard Starter Set will be available.

How does the Dual Ray technology differentiate from conventional smoke detecting techniques?

Every day, smoke detectors with Dual Ray technology reliably protect thousands of industrial-sized buildings such as shopping centres, office complexes and airports. The high-precision technology reliably detects even the finiest smoke particles. Dual Ray works with 2 LEDs in the blue and infrared range. The result is exceptionally reliable fire detection with as few false alarms as possible.

Dual Ray Technology features Intelligent Signalling Processing (ISP) based on Bosch's several decades of experience in professional fire detection.

How does the Bosch Smart Home Twinguard calculate the optimum air quality?

Dedicated algorithms analyse the different data which have been recorded and visualise the result in the form of leaf symbols for the room you are monitoring. The Bosch Twinguard app has stored data on the optimum air quality range for various room types, such as bedrooms, which are based on scientific studies. These are used as a reference.

Why do I need the Bosch Smart Home Twinguard Gateway?

The Gateway of the Bosch Smart Home Twinguard is used to connect one or multiple Twinguards to your local router. This connectivity enables the Internet capability of your Twinguard and control via your Bosch Smart Home Twinguard app. During operation the gateway serves as the wireless protocol converter from ZigBee to Ethernet and forwards data from the smoke detector to your Bosch account in the Bosch Cloud.

How can I install the Bosch Smart Home Twinguard?

To install the Bosch Smart Home Twinguard, use the wall plugs and screws provided. The easiest way to install your Bosch Twinguard is to watch the step-by-step instructions in our installation video or alternatively download the user manual. Please note: Your Bosch Smart Home Twinguard has not been approved for glued installation.

More FAQs about this product can be found here

Provides great flexibility for expansion

Your home needs safe, healthy air. The Twingard Starter Kit is the perfect addition to a small flat and the system can be easily extended to suit larger homes. The Twinguard is available as a standalone unit wth up to 24 additional devices allowed for integration.


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