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Room Alert 4ER

Temperature & Environment Monitoring, Light Tower or Relay Ready, Rack, 4 Sensor Capacity & More...

Designed specifically to assist with computer room temperature and environment monitoring in multiple locations simultaneously.

Room Alert 4ER offers an easy to use web browser interface for settings changes and viewing real-time temperature and sensor status from anywhere. Mount the Room Alert 4ER in a server rack with the 1U 19" rack mount kit (assembled) or use without the rack mount in other environments where monitoring physical conditions is desired.

  • Easy Ethernet ‘Plug and Play’ setup for remote temperature and environment monitoring from anywhere.
  • Includes 2 Digital Temperature Sensors (1 internal, 1 external, with 1 open port).
  • Use with AVTECH's sensors for Digital Temperature, Digital Outdoor Temperature, Digital Fluid Temperature or Digital Temperature & Humidity.
  • Includes 1 Switch Sensor Channel for connection of an external switch sensor such as power, flood, smoke, motion, air flow, room entry, panic buttons or others.
  • Includes 1 port for connection of AVTECH's Light Tower w/Audio or Relay Switch sensor.
  • Includes the ability to ping up to 8 devices on the network and alarm if they do not respond.
  • Includes PUSH Technology and SNMP Trap & Query compatibility.



ID Box Model / Rack Model RA4EW / RA4ER
Operating Temperature -40 to 185 F (-40 to 85 C)
Operating Relative Humidity (Non-Condensing) 5% - 85% RH
Power Source 5 VDC 1A Adapter (Included)
Power Over Ethernet (PoE) No
Power Compatibility 110/240 VAC, 50/60 Hz, RoHS
Power On/Off Switch No
Built-In Uninterruptible Power Supply (UPS) No
Mini UPS (MUPS) Compatible Yes
Reset Button (Restore To Default Settings) Yes
External Light Tower Connection Port Yes
External Light Tower or Relay Switch Sensor Port Yes, 1 Port
Ethernet Port & Speed RJ-45, 10/100 Mbps BaseTX
Ethernet Link & Activity Indicator Yes
Built-in Web Server Yes
Digital Sensors (Internal & External)
Digital Sensor Compatibility Temperature, Outdoor Temperature, Fluid Temperature, Temperature & Humidity, Temperature & Analog
Built-In Digital Sensors (Internal) Temperature
Digital Sensor Ports (External) 2 RJ-11
Digital Sensor Capacity (Total) 3
Digital Temperature Sensors (Included) 1 Internal, 1 External
Digital Temperature Sensor Range -67 to 257 F (-55 to 125 C)
Digital Temperature Sensor Accuracy + / -  0.125
Digital Humidity Sensor Range 5% to 95% RH
Digital Humidity Sensor Accuracy +/- 3.5%
Digital Sensor Alert Indicator (LED) No
Switch Sensors (Internal & External)
Switch Sensor Contact Sets (External) 1 On Front Side
Switch Sensor Capacity 1
Dry Contacts (On Other Sensors or Devices) Air Conditioner, UPS, Cooler, Etc.
Allows Multiple Sensors On Single Channel ** Yes, Via Chain or Spoke **
Switch Sensor Alert Indicator (LED) No

** NOTE: The process of 'Chaining' or 'Spoking' multiple switch sensors together is sometimes possible. There is no individual sensor alerting when multiple sensors are 'Chained' or 'Spoked' from a single