Rating of the best communication devices for 2020

The population of the planet is learning to live according to new safety rules, to prevent infection with a viral infection of various strains. When human life is at stake, civilization uses all available measures to prevent transmission of infection. One of the important requirements of sanitary discipline is the exclusion of close contact with a potential carrier of the virus. Provided not only permissible communication distances, but also additional protection measures.

An excellent insulating agent is the presence of transparent soundproof partitions in public places:

• points of social security and protection;
• banks;
• auto and railway stations;
• subways;
• airports;
• checkpoints;
• auto filling stations;
• cash desks.

The course of time has also touched the sphere of business. Face-to-face meetings and conferences are moving into the phase of remote communication, which requires high quality, fast technologies, and innovative solutions. To facilitate communication between people, the negotiation systems of the latest modern developments came to the rescue.

What intercoms are

All systems for voice communication can be divided into the following types according to the types of communication:

1. interphones, based on the principle of telephone communication;
2. intercoms, use the principle of loudspeakers, this also includes emergency communications.

Types of equipment

Simplex

Broadcasting occurs only on one side, when switching to receive, you can listen to the client's response.

Duplex negotiation device

The equipment makes it possible to simultaneously perform tasks:

1. speak;
2. listen.

When the device is connected, you can hear your own speech, plus you can hear the conversations of the connected subscriber unit.

Half duplex

The automatic system works on the principle of disconnecting the interlocutor from the transmission mode at the end of the speech and switching to reception. Depending on the required subscriber capacity, a device with a specified number of connection channels is selected.

Systems can be expanded by purchasing additional client consoles.

Multichannel devices

The simplified 1 + 1 dialog system is not suitable in cases where a number of called parties are served. To solve such a problem, a switch is required to which both the main console of the intercom system and each individual client unit are connected. Devices of this type are intended for the number of subscribers from three and more.
The connection is made through the choice of a button on the main panel; in some cases, an additional speakerphone function is used. This option is relevant at gas stations.

How to choose the right intercom

The purpose of the system is critical.

Dialogue format cashier-client or passenger-cashier can be intended both for one subscriber - bank, pharmacy, service center, and for a group - gas station.

To connect the director-secretary, stations are intended with the possibility of subsequent communication between the secretary and the heads of departments.

Wired or not

Laying the cable is a costly and time-consuming part of preparing the system for commissioning. Initially, you need to decide on the models of the devices - whether they will be wired or not.

Criterias of choice

Having solved the issue with the subscriber capacity, it is important to take into account the following system parameters:

• sensitivity setting;
• volume control;
• no loss of words and phrases when switching modes;
• the ability to record negotiations;
• network Internet control;
• availability of additional inputs and outputs;
• the ability to connect a headset;
• Speakerphone;
• resistance to weather factors (with external placement of the unit) is indicated in the characteristics of IPn1n2, where n1 is the level of protection against mechanical stress, n2 is moisture resistance;
• confidentiality of negotiations;
• guarantee period;
• equipment.

Selection errors

Do not purchase a machine with functions that will not be used.
It is necessary to decide in advance the issue of the subsequent additional purchase of software and additional blocks, is it not cheaper to take everything in the kit.

Background noises present at train stations and airports are a big obstacle not only for passengers, but also for cashiers working in an environment of humming shift. The ability of negotiation models to dampen volumetric noises, ensuring the clarity of dialogues, is characterized by the parameter of confident system operation.

Top manufacturers

Commax

The Korean company with a history of more than 52 years is a recognized leader in intercom and intercom equipment. Its products are popular all over the world, for several years over 100 countries have been in the list of regular consumers of Commax brand devices. The company has a research center, which covers both modernization and creation of unique equipment.

• proprietary voice recognition;
• interphone communication with a wireless module;
• multi-monitor systems.

STELBERRY

Enterprise "Modern Technologies" traces its technological history since 2011.

• innovative technologies;
• highly specialized direction;
• flexible automatic lines are intended for assembly work;
• integration of sound into IT;
• high sound quality;
• ease of use;
• maintaining strict quality control.

Slinex

Chinese manufacturer Slinex Technology entered the market in 2005. Slinex Russia is an independent branch operating on the domestic territory.

• popularity;
• fault tolerance;
• modern design;
• high-quality assembly.

Digital

The Ukrainian manufacturer and brand of the budget group has been known in the electronics market since 2014. Reliability and adherence to the latest innovative technologies allow the brand to retain its market segment.

The best intercoms

Commax HF-8CM / HF-4D / 19w

The device has 1 channel and is equipped with a remote microphone for cashiers.

Commax HF-8CM / HF-4D / 19w
Number of wired line channels	4
Effectiveness zone, m	300
Power consumption, V	1970-01-01 15:24:00
Maximum current, mA	150

• Speakerphone;
• complete with power supply;
• the warranty period is 360 days;
• the ability to order online;
• affordable replacement of one of the devices in case of failure;
• power indicator;
• affordable price;
• all payment methods.

• there is no call recording function.

Commax WI 4C

A set of two devices for negotiations director-secretary.

Commax WI 4C
Number of wired line channels	4
Weight, kg	0.6
Modulation type	frequency
Size, mm	182
	140
	43
Power supply, V	220
Audio signal. Power. mW	500

• type - half duplex;
• transmission of audio signals via radio frequency channels;
• high sensitivity of the microphone;
• light, sound indicator of activity;
• availability of certification;
• withstands multiple sanitization,
• volume control.

• narrow functionality.

Slinex AM 20

The system consists of a base unit and an anti-vandal external panel.

Slinex AM 20
Number of wired line channels	3
Security, class	IP 65
Frequency range, Hz	100:15000
Microphone, sensitivity, dB	51
Permissible temperature range, ° С	-40/+65
Base unit, current, A	0.2
Base unit, voltage, V	12

• base unit material - durable aluminum;
• high quality of assembly and materials used;
• power indicator;
• connection of an amplifier or a recording device is permissible;
• light indication of volume level, external conversation panel;
• the ability to connect an additional external microphone;
• stylish design of strictly black color;
• implemented reliable circuit solutions based on the Motorola audio processor;
• guarantee of high-quality sound transmission;
• 2 year warranty.

• not.

STELBERRY S 400

A single-channel system from a Russian manufacturer is designed for 4 interphone lines.

STELBERRY S 400
Number of wired line channels	4
Effectiveness zone, m	300
Client / cashier base volume, dB	78/89
Client / cashier base power, W	1,5/1,0
Permissible temperature range, ° С	-40/+50
Packaged weight, g	790
Sensitivity, microphone volume, levels	16

• the client panel unit is made of aluminum;
• the cashier's console is made of tactile plastic;
• protection against contamination of the cashier's block;
• businessmen think it is a good option for conferences;
• the presence of wind protection made of acoustic foam;
• the mylar film of the speaker has a high bending stiffness, resistant to external influences;
• all-weather dynamics;
• online order is available;
• guarantee of stability of sound parameters;
• horizontal, vertical, corner panel mounting is acceptable;
• flexible microphone stand;
• sensitivity adjustment function;
• resistant to repeated sanitization;
• convenience and reliability in operation;
• equipped with touch controls;
• the function of recording conversations is available;
• powerful power supply ensures high quality communication;
• without limiting the resource of pressing buttons;
• does not require close proximity of the microphone to the operator;
• no dip in phrase input;
• lack of response to sound stimuli and interference in the external space;
• soft microphone illumination;
• complete with connecting wires, fasteners, angle bracket and 12 V power supply.

• not identified.

Digital Duplex 215G HF

A digital three-wire system based on two Motorola audio processors is a duplex type.

Digital Duplex 215G HF
Number of wired line channels	3
Effectiveness zone, m	300
Connectors	2 x jack 3.5 mm
	RJ 9
	RCA Line out
Power supply, V	9

• recommended for connection with the separation by soundproof partitions;
• 8 independent noise detectors adaptable to the external background;
• recommended for areas with a high level of ambient noise;
• mute function;
• the external anti-vandal panel does not respond to temperature changes;
• complete with power adapter;
• increased volume of the calling panel;
• shockproof subscriber unit;
• the operator can be called with a special button;
• the ability to adjust the sensitivity of the microphone.
• connection of a headset is possible.

• not detected.

STELBERRY SX 520 - 4

The complex intercom duplex has the ability to switch to the simplex function - transmission of sound vibrations in one direction. The complex is equipped with a Sprut SR 500 network recorder, intercom systems with the ability to switch to the cashier-passenger mode.

STELBERRY SX 520 - 4
Number of wired line channels	4
Effectiveness zone, m	300
Client / cashier base volume, dB	78/89
Client / cashier base power, W	1,0/1,0
Permissible temperature range, ° С	-40/+50
Packaged weight, g	910
Sensitivity, microphone volume, levels	16
Sprut SR 500
Analog telephone lines	2 wires
Audio input	microphone + line
Information storage unit, microSD, GB	16
Audio file, type	Wav
Information exchange, protocol	FTP
Speech, compression, codec	G.771 GSM 6.10
Ethernet connector	2

• the front part of the client's panel unit has an all-weather button;
• broad capabilities of an audio recorder with four audio inputs for recording conversations of dialogue participants;
• availability of free audio inputs makes it possible to connect telephone lines, also with the registration function;
• illuminated keys;
• simplex system for negotiations in a strong noisy atmosphere, works by holding the button;
• the presence of a loud notification function;
• regulation of the sensitivity level;
• complete set of software for Sprut SR 500 for network and local management;
• operator console compatibility with any voice broadcasting equipment;
• all system functions are located on one control panel;
• the ability to download past and recorded conversations - audio files;
• availability of network connection to the registrar;
• the ability to remotely control the audio system via the Internet;
• the client's panel is made of durable materials and with a metal plate, has metal plugs to prevent theft of the unit

• absent.

STELBERRY S 760

The intercom device is designed for the number of 6 subscribers, the permissible distance is 1000 meters.

The response device is the STELBERRY S 130 model.

• all-weather speaker;
• operator call button;
• with corner mount;
• the complete set includes fasteners.

STELBERRY S 760
Number of wired line channels	4
Remote control, power, W	1
speakerphone, signal, Volt	1
Permissible temperature range, ° С	0/+50
Base unit, current, A	0.2
Base unit, voltage, V	12

• the presence of wind protection made of acoustic foam;
• touch buttons;
• volume, sensitivity - 16-level regulation;
• the remote control is made of tactile plastic;
• sound level on all channels makes communication comfortable;
• tonal accompaniment of changing settings;
• the presence of a built-in function of loud notification;
• availability of simplex mode to ensure reliable communication with a high level of external noise;
• the presence of a backlight on the dispatcher's console;
• available connection of the amplifier and speaker;
• recommended for use in industries with remote storage facilities;
• availability of relay control for opening the lock;
• volumetric high-quality sound;
• online order is available;
• individual adjustment of the operator's microphone sensitivity;
• the ability to connect an external relay for a siren or lighting;
• availability of an output for recording conversations.

• high price.

Conclusion

From the variety of intercoms for the right choice, you should decide:

1. with a transmission medium;
2. subscriber capacity;
3. negotiation modes;
4. conferences;
5. coverage area of ​​stable communication;
6. by protection class;
7. according to the configuration of possible connectors.

The communication system is designed to facilitate the communicative aspects of business or professional activity.
Optimization of processes has always been and remains one of the factors of stability and success of any business.