Wireless Digital Input Sensor with Radio signal Amplifier DDV-R1U


When used in a refrigerator, the DDV-R1U allows you to control the temperature and opening/closing the doors of the thermal van.

The digital input sensor transmits via radio the status of the two digital inputs (closed/open), and the measured air temperature at the sensor installation location.


The digital input sensor can be used for:

  • - Measure the temperature of the ambient air sensor.
  • - Control of the door opening when the sensor is connected to the door reed switch.
  • - Monitoring the position of the mechanisms, when connecting the sensor to the limit switch.
  • - Monitoring the supply voltage when the sensor is connected to the contacts of the intermediate relay or to the optocoupler.
  • - Recording the fact of pressing the button.
  • - As a radio lengthener for digital inputs.


  Sensor type Wireless
  Method for transferring data to compatible devices Radio channel
  Frequency of the data receiving/transmitting channel 2.4 GHz
  Data transmission distance up to 200 m
  Availability of a radio signal amplifier Yes
  Adjusting the power of the transmitted radio signal Yes
  Power of the radio signal supplied to the antenna +5 to +22 dBm
  Sensor power supply ER14505 battery - 3.6 V, 2400 mAh
  The life time of the batteries from 6 to 9 years (depending on the installed radio signal power)
  Self-replacement of the battery by the user Yes
  Configuring the sensor Using-USB programmer
  Own data archive and the ability to work without a terminal There are
  Communication with the terminal Via the radio signal receiver (PRS)
  Length of shielded cable for connection to the digital inputs of the sensor 3 meters
  Number of digital sensor inputs 2
  Availability of a low-inertia temperature sensor Yes
  The range of measured temperatures -40...+80 degrees C
  Discreteness of temperature measurements 1 degree C
  Accuracy of the measured temperature +/- 1 degree C
  Number of independent digital output settings triggered by a given temperature 2
  Updating the sensor firmware over the radio channel There are
  Internal log of assigned sensors There are
  Internal real-time clock There are
  Degree of protection sensor IP 67
  Operating temperature range -40..+80 S
  The warranty period 3 years old
  Average service life 7 years


The sensor can work without a terminal.

The sensor records all measured data in its own non-volatile archive and stores them for two months, so that the sensor can work independently (without a terminal). Data is read from the sensor archive using a USB radio reader.


We are pleased to inform You that the official website of LLC Alpha has been renovated and updated. It is possible to find all the information about the list of services provided by our company, to see the range of our product catalog.
GITEX 2019 exhibition held in Dubai was the first international exhibition which introduced us features of the foreign markets. We would like to thank our partner – Gurtam Company for opportunity to work with them.
We sincerely congratulate the Gurtam - our technology partners, as well as just good friends with conquest of one of the tops of telematics Olympus - reaching the mark of 2 million objects on Wialon!