VT740 / LTE modem (for VT335t, VT336t, VT825t, VT855t, VT960t)

Product page: https://vutlan.com/modems/165-vt740-lte-modem.html

Datasheet page: https://vutlan.atlassian.net/wiki/spaces/DEN/pages/2735931393/VT740+LTE+slot+modem

Usage

The VT740 module supports receiving and sending SMS messages via 2G and 3G networks, as well as providing Ethernet connectivity over LTE (4G). It ensures continuous communication by sending notifications over various channels like Ethernet, SMS, and SNMP. One of its critical functions is providing network redundancy; if the LAN connection fails, the module automatically switches to LTE 4G to maintain the Ethernet connection.

The VT740 can be integrated into Vutlan monitoring systems, including VT335t, VT336t, VT825t, VT855t, and VT960t. Additionally, it features an embedded power cycling function, allowing remote rebooting of connected devices.

This module is ideal for network backup and ensuring communication reliability in mission-critical environments.

The same PCB of VT740 is used for i and t series (e.g. VT335i and VT335t). But The metal enclosures use a different metal panel for holding the modem. t series have an additional screw to hold the panel. Thus the installation is slightly different. But in all other regards, it is the same.

Technical specifications

Function & purpose

Description

Function & purpose

Description

Used for:

Network reservation, SMS notification messages, Ethernet access, Control over AT commands

Device type:

Extenion slot

Used for:

VT335t, VT336t, VT825t, VT855t, VT960t monitoring systems

 

 

Communication

Description

Chip:

SIMCom, SIM7600E

Frequency Bands Supported:

2G: GSM 900 (B8), GSM 1800 (B3)

3G: UMTS 900 (B8), UMTS 2100 (B1)

4G: LTE 900 (B8), LTE 1800 (B3), LTE 2100 (B1)

TX - GSM:

900 MHz to 12.75 GHz

TX - LTE:

30 MHz to 12.75 GHz

Specific Frequencies and Frequency Bands Supported:

  • 2G:

    • 900 MHz (B8): 902.40 MHz

    • 1800 MHz (B3): 1750 MHz

  • 3G:

    • 900 MHz (B8): 883.53 MHz

    • 2100 MHz (B1): 1922.60 MHz

  • 4G:

    • 900 MHz (B8): 899.45 MHz

    • 1800 MHz (B3): 1745.63 MHz

GNSS:

gpsOne Gen 8B;standalone;assisted,XTRA

Uplink:

up to 5Mbps

Downlink:

up to 10Mbps

 

 

General

Description

Manufactured in:

Slovak Republic, EU. Vutlan s.r.o.

HS code:

9025 11 800

GTIN:

8588009886341

Certificates:

ROHS, REACH, CE

Package content

Make sure that the contents of the delivery meet the following configuration.

Report a missing or damaged component to your supplier.

If damage occurred during transportation, contact the appropriate delivery service.

Package content

Description

1

x1 LTE modem PCB board

2

x2 LTE antennas

3

x2 pieces

4

x2 pieces

Panel

 

  1. "Main antenna" - Connector, used when the modem is installed inside of the appliance to connect the LTE main antenna. ( The main antenna is supplied together with the modem).

  2. "SIM card" - SIM card slot with an injector.

  3. "Status" - displays modem status. Blinking = working.

  4. "Auxiliary" - Connector, used when the modem is installed inside of the appliance to connect LTE auxiliary antenna. The additional antenna helps to strengthen the signal level. ( Auxiliary LTE antenna is supplied together with the modem).

Installation

You can install the modem while the system is turned On. You may wait up to 3 minutes until the Telecom operator information is renewed.

Step 1

 

Unscrew the M3 screw from the LTE metal panel.

Step 2

Use the wire cutter tool to cut off the metal inserts.

You can dispose of the metal inserts.

Step 3

Plug the VT740 slot modem as shown on the picture into the opening. The board should slide into the guide rails (marked as “1”) and plug into the jack (marked as “2”).

Step 4

Put the LTE metal panel back in (marked as “1”).

Screw the M3 screw back in fixating the LTE metal panel (marked as “2”).

 

Step 5

Screw the main LTE antenna into “Main” antenna” jack.

If you want to strengthen the signal, you can screw in the second auxiliary antenna into “Auxiliary” jack.

Step 6

 

Plug in the micro SIM card. The SIM card slot has an injector.

Step 7

 

You are ready to go! Turn on the system.

You can install the modem while the system is turned On. You may wait up to 3 minutes until the Telecom operator information is renewed.

Setting up GSM modem

Page linked https://vutlan.atlassian.net/wiki/spaces/DEN/pages/625016833/Setting+up+GSM+modem

 

LTE modem mode

Page linked https://vutlan.atlassian.net/wiki/spaces/DEN/pages/616923140/LTE+modem+mode

Other articles of interest

Sending SMS via another Vutlan device equipped with a GSM modem (SMS Gate) (link)

Incoming SMS forwarding and SMS commands

How to use SMS commands

Send SMS through the Vutlan device

OpenVPN client

Frequently asked questions: