Page Comparison

Datasheet page: https://vutlan.atlassian.net/wiki/spaces/DEN/pages/2903769089

Product page: https://vutlan.com/remote-monitoring-units/185-vt855t-remote-monitoring-system.html

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Keywords: Remote monitoring system, SNMP monitoring device, Master monitoring unit, I/O controller, temperature monitoring, water leakage, remote environment, environment monitoring, IoT monitoring unit, remote environment monitoring, stand-alone monitoring, smoke detector, relay contacts, data center optimization, Server room monitoring, data center safety, data center optimization, remote power switch, server room environment,

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Function and purpose

“VT855t / Data Center Monitoring System” is used for environmental monitoring (e.g. temperature, humidity, voltage, leakage, smoke, airflow). It is also used as an I/O controller (e.g. door control, fans, generator, control panels, UPS, circuit breakers, and alarms). Can use up to 1000 different elements - notifications, triggers, timers, logic schemes, sensors, dry contacts. Has a built-in Web interface with virtual sensors, logic schemes, different types of notifications, and control panels. Has a slot for an LTE modem for an ethernet connection reservation.

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Virtual sensors include PING, timers, triggers, Logic schemes, SNMP GET, x4 IP cameras, Virtual math elements, and others.

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Order options / Dimensions

System	Diagram
VT855t
VT855tt
VT855tDC
VT855DC
VT855DCDC

Physical Description

Front panel:

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Back panel:

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1. "1U 19-inch brackets" - x2 pcs for mounting brackets into a 1U 19" rack slot.

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26. "MAIN INPUT 24-48V DC" - optional order option for some of the units. Please refer to the section "Order options" in this document.

Connection overview diagram

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Drawing dimensions

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19” 1U installation in a rack-cabinet

1.1		x2 19” brackets should be located in the package together with the system. Use x3 M3 screws to mount the brackets on each side of the unit.
1.2
2		Use x4 captive nuts and x4 M6 Screws to attached the unit to the rack.

Installing VT485m / RTU modem extension slot

VT855t has a slot for an extension. You can install only one module in this slot. You can install the “VT485m / Modbus RTU modem extension slot” or the “VT485r / OSDPv2 reader extension slot”. Both modules are ordered separately.

Extension	Photo with the module installed
VT485r
VT485m

Installing LTE slot modem

VT855t has a slot for “VT740 / LTE slot modem”. The modem is ordered separately.

Extension	Photo
VT740

Installing reservation battery

The unit has an “Extension battery slot” at the back of the unit. You can install VT-BAT / Reservation battery 6F22 9V or VT-ACCU / Rechargeable reservation battery.

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Extending the number of sensors and devices connected to the system

Example	Picture	Link
1		You can connect CAN sensors and devices in a CAN bus chain. Read more at: CAN devices connection Setting up CAN
2		VT408 / Analog sensor extenion unit increases a number of connected analog sensors. Each unit adds x8 ports. This is a CAN device. Multiple devices can be connected in a CAN bus chain. See example #1. Read more at: VT408 / Analog sensor extension unit
3		Increases a number of connected dry contact inputs. Each unit adds x64 or x32 contacts. Read more at: VT440 / Dry contacts unit & VT32 / Dry contacts board extension
4		Add sensors and devices. See available devices: Sensors and meters www.vutlan.com

Package content VT855t series

Technical details

See a comparison table with technical details for each individual Vutlan monitoring unit at:

https://vutlan.atlassian.net/wiki/spaces/DEN/pages/705855489

Frequently asked questions

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