VT740 / LTE modem (for VT335t, VT336t, VT825t, VT855t, VT960t)
- Vladimir Tayzhev
- Admin1
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 |
|---|---|
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 |
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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: |
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GNSS: | gpsOne Gen 8B;standalone;assisted,XTRA |
Uplink: | up to 5Mbps |
Downlink: | up to 10Mbps |
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General | Description |
Manufactured in: | Slovak Republic, EU. Vutlan s.r.o. |
HS code: | 9025 11 800 |
GTIN: | 8588009886341 |
Certificates: | ROHS, REACH, CE |
Package content
Panel
"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).
"SIM card" - SIM card slot with an injector.
"Status" - displays modem status. Blinking = working.
"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”).
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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
Send SMS through the Vutlan device
Frequently asked questions:
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