ITEAD Sonoff DW1 - door opening sensor

3 minutes of reading
Proconductor: ITEAD
Category: Sensore
Type: Sensorand opening gates
Technology: Radiofrequency
Installation difficulties: Bassa
Ease of use: Alta
Availability: Amazon
Review review: 1.1

Sensorand contact ITEAD Sonoff DW-1 / 2

The ITEAD Sonoff DW-1 is one of the line sensors ITEAD Sonoff Smart Home among the most elementary, but not for this little effective.

Specifically, it is a door opening detection sensor, or a device that, against the opening of the finestra / door / gate / bascula detects this status.
It consists of two plastic elements, a larger one (which contains the electronic components as well as the signaling LED), the "master", and a smaller one, which contains the magnet, the "slave".

The master element contains the 12v battery and electronics, which is equipped with an ampoule which, positioned in correspondence with one of the two long sides of the master, in turn contains two blades that close a circuit when in the presence of the proximity of the "slave" magnet. The allontanameby the magnet opens this circuit and determines the sending of a radio signal to 433mhz to a receiver (approelucidation).

Sensorand contact ITEAD Sonoff DW-1 / 3
The master unit open.

Placing the two elements one next to the top on the correspondence of the opening of an opening they will allow the detection of the opening which, in addition to springing into a radio signal, briefly turns on an LED the signal on the master unit:

Sensorand contact ITEAD Sonoff DW-1 in operation
Example of functionnameof the DW-1.

The type of this sensor is "door opening monitoring" and not "door monitoring": the difference lies in being able to detect the only opening of a given passage and not any closure.


Write about compatibility dell'ITEAD Sonoff DW-1 is very easy: in fact, It's nothing.

In reality, writing about this component makes little sense to talk about compatibility, as it is a "stupid" sensor. It does not offer any kind of interaction with the outside world: it merely sends a radio pulse when it detects a status condition, and this is it. It does not offer interfaces, consoles, Wifi connection, nothing.

The thing presents advantages and disadvantages.

The most obvious advantage lies in its intrinsic security: not offering a network interface cannot suffer any cyber attacks, although its elementary electronic is not infallible in case of attacks of other nature (radio disturbances, for example). The most obvious disadvantage instead, it must be used in pairs with a component capable of intercepting its signals and then interpreting them.

On inDomus we tested it in combination with theITEAD Sonoff RF Bridge, member of the same family able to receive, interpret and send radio signals to 433mhz, and we can say that we are more than satisfied both in terms of reliability and functionality, especially given the very low cost of each component.

Domotics integrability

As for the discourse related to compatibility, in terms of integration the DW-1 by itself it is not a domotic component nor a basic sensor that can be integrated with anything. "Do a thing" and does it well, or send a radio signal when its magnet is removed.

The speech changes bringing examples. We tested it in the field using it paired with theITEAD Sonoff RF Bridge, specifically by modifying the latter with firmware Sonoff-Tasmota to then add it, using the plugin "homebridge-mqtt-sonoffRF-receiver", a Homebridge.

Through the combined use of these components we ended up with an opening sensor in our HomeKit home automation system, which says it all: automation, notification activation, anti intrusion: all with a very simple and very functional device.

On the front Home Assistant this sensor it is equally integrable: always through RF Bridge it is possible to integrate one or more to equip oneself with a real anti-intrusion system. We have dedicated this type of integration an ad hoc page.


Detailed evaluation:

Constructive quality
Use: quality and experience
ITEAD Sonoff DW1 - Buy on AmazonThe judgment on the sensor ITEAD Sonoff DW-1 is at the end positive: sure, there is no state that is not the opening; sure, it is in plastic and it is very elementary and, above all, by itself it is a totally useless object, but it becomes a portentous instrument where it is used in home automation using different techniques, one of which we have illustrated above.

It therefore allows to realize un profirst anti-intrusion system spending a ridiculous amount and implementing it in the profirst personal home automation.

There are better alternatives.

ITEAD Sonoff BasicATTENZIONE: remember that there is on our FORUM community an ad hoc section dedicated to Sonoff (and more generally to devices ESP8266), for any doubt, question, information on the specific merit of these components.

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