Comparison chart: Master modules (VT series) (legacy)

Device Management: Web, SNMP, manually via SMS

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Interface

VT825

VT336

VT335

VT325

LAN: Ethernet 10/100 Mbit

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OS: Linux

v.3.10

v.3.10

v.3.10

v.3.10

RAM:

64Mb

64Mb

64Mb

64Mb

CPU speed:

300mHz

300mHz

300mHz

300mHz

Clock: Built-in clock 

Watchdog: Built-in watchdog timer

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Max. amount of sensors: physical sensors, dry contacts, relays

50

30

30

6

Max. amount of elements: notifications, triggers, timers, logic, sensors, dry contacts, SNMP Get, SNMP Trap, and other elements

500

500

500

500

Network protocols: DHCP; HTTP; HTTPS; DynDNS; SSL; SNMP v1, v2c, v3; SMTP; FTP; Syslog; RADIUS; Modbus RTU; OpenVPN

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VPN: secure data communications; secure change of connection between LTE and LAN

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SSH: Provided as a separate patch.

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Alert types: E-mail, FTP log, Syslog, SMTP, SNMP Traps, SMS (Modem is ordered separately), Web-to-SMS, PUSH

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A maximum number of "mail to" recipients in an E-mail notification:

10

10

10

10

A maximum number of "SMS to" recipients in an SMS notification: also the maximum amount of phone numbers

10

10

10

10

Pings: Built-in function for server pinging. Test the reach-ability of a host in a network.

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IP cameras: Connect the IP MJPEG camera with a proxy via the master module.

1

1

1

1

Get SNMP: Read data from external equipment via SNMP PDU GET (v1/2c)

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User keys: Add users who have access using RFID reader.

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Logic schemes: Used to specify automatic actions to events that occur in the system.

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Timers: Allows you to plan the events in the system.

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Triggers: Generate events in the system if logic is triggered.

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Push notifications

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SNMP traps

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Virtual Math element (combine several sensor data and calculate new data)

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Logic schemes

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Modbus TCP/IP: read / write

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Power

VT825

VT336

VT335

VT325

Power input:

90-230V 

12V

12V 

12V

Power input DC:

24 ÷ 48V 

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24 ÷ 48V 

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Fuse:  Fuse at the inlet

1A

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Max. power consumption:

10W

12W

10W

6W

The maximum current load on the relay:

250mА

250mА

250mA

250mA

Redundant power supply: built-in voltage monitor, voltage range 9-12.6V.

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Relay outputs: latching relays 240V*10A

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Relays outputs: 12V 0.25A

2

2

2

2

Max. dry contact outputs (contact closures/digital outputs)

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Audio output: AV OUT

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Video output: AV OUT

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Analog port: 6P6C  for connection of any analog sensor.

8

6

4

2

CAN port: Max number of sensors

Use CAN-12V-1A for connecting more than 12 devices.

20

20

20

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Dry contact inputs:

4

4

4

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Modbus: (Max. 32 sensors, Max. line length 1000m)

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Reader 1-Wire

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Video cameras:

USB, x1 IP

USB, x1 IP

USB, x1 IP

USB, x1 IP

Video power supply: DC 12V 0,25A for analog camera

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Other connectors

VT825

VT336

VT335

VT325

Ethernet port: 10/100Mbit

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USB 2.0 Type A

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USB 2.0 micro 

1

1

1

1

Switch Normal / Recovery: returns the device to factory settings

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