Such intercom call devices are necessary for facilities where the ability to access the telephone network is required. All UPG-78 models, including call devices with a keyboard, are manufactured in a case protected by class IP66, are suitable for year-round operation at external temperatures from -55 to +55 °C at industrial facilities, have a built-in speaker in the basic configuration and support the connection of various optional equipment.

Support for direct access to the telephone network ensures communication between the UPG-78 call intercom and external subscribers and makes it more versatile, especially for remote industrial facilities. At the same time, call intercoms with a keypad-dialer implement the functionality of a telephone with a push-button keyboard, allowing the subscriber to access the telephone network and dial any existing telephone number. To organize two-way communication, these call devices are equipped with a built-in speaker, and as additional options, they support the connection of such equipment as a telephone handset, remote microphone (push-to-talk), etc.

Operation of UPG-78 with a keyboard is possible in difficult conditions, since these intercoms have an increased degree of housing protection - IP66 (in accordance with GOST 14254-96), and remain operational in the temperature range from -55 to +55 °C. Linsis call intercoms are manufactured in a technological housing made of reinforced durable plastic, especially resistant to aggressive environments. They have the necessary certificates for the creation of a modern public address system at enterprises of extraction, processing and production of various industries in Russia, in particular, on the territories of large industrial plants.

The Russian origin of Linsis equipment is confirmed by the ST-1 certificate and allows the installation of UPG-78 call intercoms with a keyboard at strategically important facilities, critical and transport infrastructure facilities. The Ministry of Industry and Trade of the Russian Federation, in accordance with RF PP No. 719 of 17.07.2015, included Linsis equipment in the "Register of Industrial Products Manufactured in the Territory of the Russian Federation". It is important to note that Linsis has received a patent for its developments in the field of industrial communications, which confirms their uniqueness.

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New From Linsys: UPG-78 Call Intercoms With Keyboard-Dialer