AVTECH Room Alert 3E

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£161.94 £134.95

A compact yet highly functional ethernet based environment monitor featuring a built-in temperature sensor and supporting one external digital sensor and one external switch sensor.

The AVTECH Room Alert 3E is an affordable, compact, yet highly functional solution for server room monitoring. Whether you have a small data center or require high density monitoring in a larger data center, you will find the Room Alert 3E to be an ideal 0U monitor.

Features of the Room Alert 3E

  • Built-in temperature sensor
  • Optionally add 1 x digital sensor and 1 x switch sensor
  • High/Low thresholds
  • Alerting by email
  • PoE ready
  • Includes an external power adapter
  • Celsius/Fahrenheit
  • SNMP support
  • Built-in web server

Monitors phone or wiring closets, critical rack cabinets and facilities of all types, in real time. Since Room Alert 3E is connected via Ethernet and does not require a host PC for operation, it can be located anywhere an Ethernet connection is available. Room Alert 3E is Power over Ethernet (PoE) enabled which allows it to be placed anywhere PoE Ethernet is available (i.e. power source not required). Sensors can be run inside a rack cabinet, air vent, sub floor or other location. Room Alert 3E will help to protect valuable IT equipment or other property and minimize downtime if a disaster should occur.

Room Alert 3E can also be easily used in non-technology environments residential and commercial buildings, restaurants, warehouses, greenhouses and much more.

Supported Sensors

The AVTECH Room Alert 3E is the monitoring base unit and has one built-in temperature sensor. You can add further external sensors in order to sense a wide variety of different environmental factors in your data center.

Sensor Connectors 1 x RJ-11 Digital Sensor Connectors
1 x Dry contact two pin connectors
Built-in Sensors Temperature
Max. External Sensors 1 x Digital Sensors
1 x Switch Sensors or Dry Contacts
Supplied External Sensors None
Supported External Sensors Digital Temperature Sensor
Digital Temperature/Humidity Sensor
Digital Outdoor Temperature Sensor
Digital Fluid Temperature Sensor
Flood Sensor (Spot)
Rope Flood Sensor
Mains Power Sensor
Air Flow Sensor
Smoke Sensor
Motion Sensor
Room Entry Sensor
Fuel Level Sensor
Water Level Sensor

Room Alert Range Feature Summary

  Room Alert 3 Wi-Fi Room Alert 3E Room Alert 3S Room Alert 12E Room Alert 12ER Room Alert 12S Room Alert 12SR Room Alert 32E Room Alert 32S
Warranty One Year One Year Three Years One Year One Year Three Years Three Years One Year Three Years
Mounting Wall Wall Wall Wall Rack Wall Rack Rack Rack
Network Wi-Fi Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet
Power over Ethernet (PoE)
Digital Sensors Digital sensor ports only support connecting digital sensors. Digital sensors measure within a range of values, like a temperature range. 1 1 1 3 3 3 3 8 8
Switch Sensors Switch sensor ports only support connecting switch sensors. Switch sensors only measure one of two states, the normal state and the alarm state. Take the smoke sensor as an example, it has a normal state which indicates no significant smoke is present and an alarm state that indicates that a significant amount of smoke is present perhaps indicating a fire. 1 1 1 4 4 4 4 16 16
Analog Sensors Analog sensors provide values as voltages between 0-5VDC. Common analog sensors include current loops and extreme high and low temperature sensors. The Room Alert 3 WiFi and Room Alert 3E do not support analog sensors, but you can buy the Digital Temperature & Analog Sensor to add support at the cost of one of your digital sensor ports. 0 0 0 1 1 1 1 2 2
Light Tower & Relay PortsA port for connecting a Light Tower to your Room Alert. There are two port types. The Room Alert 4E / 4ER has a six terminal port to plug in the AVTECH External Light Tower. The Room Alert 12E, 12ER, 32E and 32W all have RJ11 connectors dedicated to the light tower. But the light tower must be the model with the built-in light tower adapter. The Room Alert 3E also supports the light tower but does not have a dedicated port. You must use one of your digital sensor ports to connect the light tower. 0 0 [1] 0 [1] 1 [1] 1 [1] 1 [1] 1 [1] 2 [1] 2 [1]
Relay Output PortsTwo pin port (0.3A@125VAC / 1A@24VDC) for connecting an output relay to your Room Alert. 0 0 0 1 1 1 1 2 2
Built-in Sensors Temperature Temperature Temperature Temperature Temperature Temperature Temperature Temperature, Humidity, Power Temperature, Humidity, Power
Supplied External Sensors None None None 1 x Digital 7.5m Temperature / Humidity Sensor 1 x Digital 7.5m Temperature / Humidity Sensor 1 x Digital 7.5m Temperature / Humidity Sensor 1 x Digital 7.5m Temperature / Humidity Sensor 1 x Digital 7.5m Temperature / Humidity Sensor 1 x Digital 7.5m Temperature / Humidity Sensor
Secure HTTPS
Secure Email Alerts
SNMP Support None SNMP v1 SNMP v1
SNMP v2c
SNMP v2c
SNMP v2c
SNMP v2c
Built-in UPS An Uninterruptable Power Supply or UPS keeps your monitoring system alive during power outages giving your monitoring system time to send alerts.

[1] A Light Tower can be connected to the Room Alert 3E, Room Alert 3S, Room Alert 12E & 12ER, Room Alert 12S & 12SR and Room Alert 32S using a Light Tower Adapter. The Room Alert 12S, 12SR and 32S all have dedicated ports for connecting the Light Tower with Adapter. On the Room Alert 3E and 3S you need to use one of the digital sensor ports. You can buy a light tower with integrated light tower adapter for use with the Room Alert 3E, 3S, 12E, 12ER, 12S, 12SR, 32E and 32S.

Room Alert Integration Options


RoomAlert.com Screenshot

RoomAlert.com is a AVTECH's cloud based service for monitoring Room Alert monitors and newer Axis cameras combined with a download area for device firmware updates and Room Alert Manager software and plugins. The service has a number of different subscription tiers, Base, Personal, Professional and Enterprise. The tier of your subscription dictates what level of access to the RoomAlert.com service you receive. If you require a level of access afforded by a higher tier, you can upgrade your subscription to the higher level at any time.

RoomAlert.com gives you worldwide visibility of your environment data, with built-in alerting, logging and reporting. You'll no longer need to guess what your data center temperature is, you'll be able to see in real time exactly what the temperature is from any web connected device like your smart phone or tablet. All Room Alert monitors are able to send your data readings straight up to RoomAlert.com where it is stored, logged and, if necessary, triggers an alarm for you.

RoomAlert.com Subscriptions

RoomAlert.com is a subscription service with a free tier. If your paid subscription expires, you drop to the free tier. All tiers paid or free have access to Room Alert monitor firmware updates.

Each Room Alert monitor includes a 12 month Personal tier subscription to RoomAlert.com. You can upgrade your subscription at any time to a higher subscription tier. If after your twelve months subscription you do not renew, then your subscription tier reverts to the Base tier. The Lite subscription gives you limited access to the cloud service but it does give access to firmware updates but does not give you access to Room Alert Manager updates.

  Base Account Personal Professional Enterprise
RoomAlert.com Features
Users 1 User 2 Users 10 Users 25 Users
Registered Devices 1 Device 10 Devices 25 Devices 50 Devices
Registered Links     10 Devices 25 Devices
Data History 1 Day 30 Days 180 Days 365 Days
Monitor360™ Sensors     10 Sensors 25 Sensors
Configured Alerts 1 Alert 10 Alerts 25 Alerts 75 Alerts
Unlimited Notifications
Advanced Alerting    
Saved Reports 1 Report 3 Reports 7 Reports 25 Reports
Public URLs    
Network Camera Monitoring    
Firmware Downloads
AVTECH Device Discovery
Room Alert Link™    
Room Alert Manager™    
Device ManageR to Room Alert Import Tool™    
AVTECH Device ManageR™ (legacy)  
AVTECH Device ManageR™ Plugins (legacy)    
Support Online FAQs & Resources Email Support Email, Chat & Phone Support Email, Chat & Phone Support

Room Alert Link

Room Alert Link is AVTECH's software package that acts as a bridge between your local estate of Room Alert monitors and the RoomAlert.com cloud. Room Alert Link is able to discover new Room Alert monitors as well as securely transfer environmental data from your local network up to AVTECH's RoomAlert.com cloud.

Room Alert Manager

Room Alert Manager is AVTECH's locally installed all-in-one software solution for the discovery, management, monitoring, alerting, logging, graphing, automatic action and more of AVTECH's IT & facilities environment monitoring products. Complete with its unique range of features, Room Alert Manager runs as a Windows Service and will continuously and automatically discover Room Alert devices network-wide and display multiple units through a single IP address. Multi-level user access is available through Room Alert Manager’s web interface, accessible from anywhere.

Room Alert Manager Device Screen

Room Alert Manager offers the perfect complimentary software platform to AVTECH’s Room Alert monitors, making it easy for users with multiple Room Alert devices to monitor and document environment conditions, improve reliability, and decrease unplanned downtime as part of their business continuity plan.

Room Alert Manager includes powerful features that allow users to send alert notifications when issues or events are detected by their Room Alert monitors and sensors. Room Alert Manager allows for unlimited alerting of customizable alert notifications to individuals and groups, hierarchies, dependencies and scheduling. It also allows for Actions on Alert/Alert clear conditions such as toggling Light Tower LEDs, Send Web URL requests and more. All this is possible through a single local software installation, with no rules and no agents.

Ideal for managing multiple deployments or single units, Room Alert Manager also allows users to take automatic actions to resolve issues, automatically log sensor data in an embedded SQL database for one click export, view graphed data over a user-specified amount of time with the ability to toggle between graph and sensor displays, monitor alert status for multiple units, set monitoring thresholds, set multiple IP addresses, securely update firmware and so much more. Users can categorize devices based on their own custom criteria, so users can group devices by type, location, or any other metric that allows for easier device management.

Integrate into your Existing Systems

If you are already using a network management system you can integrate your Room Alert monitor data into your existing system using SNMP. SNMP is protocol designed to make integrating different systems together. Please see the Guide to using SNMP with the Room Alert for further details about the information available from your Room Alert monitor and how you can retrieve it.

AVTECH have also implemented an API for the Room Alert monitors so you can retrieve data from your monitors using HTTP web protocol. If you would like further details how you can retrieve data using HTTP, please read the Guide to using PowerShell with your Room Alert.

What's in the Box?

  • 1 x Room Alert 3E base unit
  • 1 x external power adapter
  • 12 Months Personal level RoomAlert.com subscription
  • Printed manuals
More Information
Connectivity Ethernet (RJ45)
Built-in Sensors


Max External Sensors

1 x Digital Sensor

1 x Switch Sensor / dry contact

External Sensors Supported
AVTECH 7.5m Digital Temperature Sensor Digital
AVTECH 15m Digital Temperature Sensor Digital
AVTECH 30m Digital Temperature Sensor Digital
AVTECH 7.5m Digital Temperature/Humidity Sensor Digital
AVTECH 15m Digital Temperature/Humidity Sensor Digital
AVTECH 30m Digital Temperature/Humidity Sensor Digital
AVTECH 7.5m Digital Outdoor Temperature Sensor Digital
AVTECH 15m Digital Outdoor Temperature Sensor Digital
AVTECH 30m Digital Outdoor Temperature Sensor Digital
AVTECH 7.5m Digital Fluid Temperature Sensor Digital
AVTECH 15m Digital Fluid Temperature Sensor Digital
AVTECH 30m Digital Fluid Temperature Sensor Digital
AVTECH Flood Sensor (Spot) Switch
AVTECH Rope Flood Sensor Switch
AVTECH Mains Power Sensor Switch
AVTECH Digital Active Power Sensor Digital
AVTECH Air Flow Sensor Switch
AVTECH Smoke Sensor Switch
AVTECH Motion Sensor Switch
AVTECH Room Entry Sensor Switch
AVTECH Fuel Level Sensor Switch
AVTECH Water Level Sensor Switch
External Sensors Supplied


Mounting Options Shelf
Logging Yes
User Interface Built in web interface
Alerting Email, SNMP Trap
Supported Protocols



Power Supply External Power Supply, Power over Ethernet
Dimensions 2.2cm H x 9.2cm D x 4.4cm W

1 x RJ-11 Port for Digital Sensor

1 x 2 Wire Terminal

Operating Environment

Temperature: -40 to 85C

Relative Humidity: 5% - 85% RH (non condensing)

Network Interface

RJ-45, 10/100 Mbps BaseTX

Status Indicators

Ethernet Link & Activity Indicator

Digital Sensor Alert Indicator

Switch Sensor Alert Indicator

Power over Ethernet IEEE 802.3af
Temperature Units Celsius / Fahrenheit
Customer Questions
What is GoToMyDevices.com?
GoToMyDevices.com has now been renamed to RoomAlert.com. RoomAlert.com is a cloud service operated by AVTECH Software supporting the Room Alert range of environmental monitors. The service optionally stores data from your Room Alert monitors and provides...
Are the Room Alert SNMP MIBs available?
Yes. The MIBs are available from the GoToMyDevices.com download area. Alternatively, you can request a copy by emailing support.
Does the AVTECH unit come with maintenance?
Yes. The AVTECH Room Alert monitors are supplied with 12 months maintenance and support. This is renewable after that date for a small charge.
Can the email alert be set up so it notifies you if the temperature reaches over a set point?
Yes. You can alert on the threshold going over or under a range you specify.
I'm looking for a Room Alert sensor that can detect water coming into server room through underground?
The rope type water sensor would be best in this case. The rope flood sensor is available in lengths of 2.4m or 7.3m. The sensor fits on all Room Alerts.
Can I use the Avtech Water Level Sensor (NC) to monitor the fuel level in the fuel tanker?
No. I would not recommend this sensor for use in a fuel tank. You would need to use one of the Fuel Level sensors for the AVTECH products. There are two versions, one is Normally Closed (NC) and the other is Normally Open (NO).
Does the AVTECH Flood sensor work with the AVTECH Room Alert 4E?
Yes. The Flood sensor fits on the 'switch' type port on the Avtech Room Alert 4E.
Is the AVTECH Room Entry Sensor - RMA-RE1-SEN compatible with Room Alert 3E?
Yes. The Room Entry sensor is a switch sensor and the Room Alert 3E has one switch port available in addition to the one digital sensor port.
Do customer need calibration for Avtech Room Alert?
The Room Alert models are calibrated at the factory and require no further calibration by the customer. However the software has an Adjust feature which allows you match the readings to a given reference thermometer.
Is the Room Alert 11E still available?
No. The AVTECH Room Alert 11E environment monitor was discontinued a number of years ago and is no longer being manufactured. The Room Alert 11E was replaced by the Room Alert 12E.
I'm looking at how to use the Room Alert 3E remotely. Say maybe connect via USB to use a mobile phone to send an email on a daily basis as to the temperature at that time?
The Room Alert 3E has an IP address and can be made visible remotely like any other IP address, typically using Port Forwarding on the Router. Email alerts are standard and set up to use a normal SMTP mail server. If you want to add Schedules...
Can we use the sensors of AKCP in AVTECH room alert 3 or 4E?
No. The AKCP and Avtech Software sensors are not compatible with each other due to using a different connector. AKCP use a RJ-45 connector between the sensor and the environment monitoring main unit and Avtech use a RJ-11 connector. You can only use ...
Is the Room Alert 3E compatible with Office 365 SMTP?
No, not directly from the Room Alert 3E unit anyway. The Office 365 SMTP server can only be used using encryption. Any attempts to connect to the SMTP server without encryption will be denied. There are a few workarounds though: Use the AVTECH Room...
What is the difference between digital and switch sensors?
AVTECH Software have a range of sensors that are compatible with the Room Alert range of environmental monitors. Each sensor has two types of sensor ports built in to them. The digital sensors are used to measure values over a defined range for example...
What is Dew Point?
Dew point is the temperature to which air must be cooled to become saturated with water vapour. When further cooled, the airborne water vapour will condense to form liquid water. You must have a combined temperature / relative humidity sensor attached...
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