Riello Sentinel Dual 2200VA ER - Tower / Rackmount for extended runtimes - Requires 16Amp supply. (no internal batteries)

In Stock


Sentinel Dual is the high density version of the Sentinel Pro range of double-conversion on-line UPS.

Sentinel Dual is designed to power critical loads such as servers, storage systems, telephone equipment, medical systems and industrial applications; and is ideal for Blade servers with an input power factor close to unity (1).

Price: £661.50

Price With Tax: £793.80

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  • Tower or Rackmount UPS: SENTINEL DUAL can be installed as tower or 19” rackmount UPS, with a front mimic panel that can be turned through 90º to suit the installation.
  • Noise Free Operation (<40dBA): the UPS can be installed in any environment thanks to its PWM digitally-controlled high frequency inverter.
  • High Temperature Operation: UPS components are sized for high temperature operation up to 40ºC and are not therefore stressed during normal operational environments.
  • EnergyShare: Sentinel Dual output sockets can be programmed to disconnect less critical loads when the mains power fails.<ul></ul>


Sentinel Dual can be programmed remotely via software or set manually from the front mimic panel to operate in a range of energy saving operating modes:

  • On Line: maximum power protection and output voltage waveform quality.
  • ECO: to increase operating efficiency to 98% and provide line interactive protection.
  • Smart Active: with the UPS selecting automatically its operating mode - ECO or On-Line dependent upon the reliability and quality of the local mains power supply.
  • Backup: for emergencies only with the UPS only operating when mains power fails.
  • Frequency converter: from 50 to 60Hz or 60 to 50Hz.<ul></ul>


Sentinel Dual offers maximum flexibility for integrations with any communication system.

  • Multiplatform communication for all operating systems and network environments, Powershield3 supervision and shut-down software included for Windows 7, 2008, Vista, 2003, XP, Linux, Mac OS X, Sun Solaris and VMware ESX operating systems and other Unix operating systems.
  • UPS Tools configuration and personalisation software supplied as standard.
  • RS232 serial port and opto-isolated contacts.
  • USB port Slot for communication cards such as Modbus/Jbus, TCP/IP, SNMP and relay contacts.<ul></ul>


  • Even with distorting loads (IT loads with a crest factor of up to 3:1).
  • High short circuit current on bypass.
  • High overload capacity: 150% from inverter (even with no mains power).
  • Filtered, stabilised, reliable (On Line double conversion technology (VFI in accordance with EN62040-2 class C2) standard with filters to suppress atmospheric disturbances.
  • Load power factor correction: incoming UPS power factor close to 1 and sinusoidal current absorption.<ul></ul>


  • Automatic and manual battery tests
  • Batteries are ‘hot-swappable’ and user replaceable.
  • Unlimited battery runtime extension using battery extension packs.<ul></ul>


  • Output voltage can be selected using software (220-230-240V).
  • Auto-restart when mains power returns (programmed via software)
  • Stand-by on Bypass: when the machine is switched off, it automatically goes into bypass operation with batteries charging.
  • Power-Off with zero load connected to save energy Low battery warning
  • Power-on delay.
  • Full microprocessor control.
  • Automatic bypass without interruption.
  • Status, measurements and alarms available on the front panel mimic panel and LCD.
  • UPS firmware upgrade via PC platform.
  • Input protection including a user reset thermal switch (up to 1500VA).
  • Back-feed protection.
  • Manual option to switch to bypass.<ul></ul><ul></ul>



All prices are per box up to  a maximum of 30Kgs.

England and Wales
Express 9 £15.00
Express 10 £12.00

Next Day £5.99
Supersaver £3.99 2 day service
Southern Scotland Next Day £5.99

Highlands, Islands of Scotland two days*, Northern Ireland £11.99
Jersey, Guernsey, IOW, IOM and Southern Ireland £20.00 Two day service
* Postscodes this includes are at the checkout stage.

Services in bold are guaranteed services for stock items ordered before 3pm

On certain products VPS offers free delivery this is on a 2-5 working days basis. Free delivery only applies to orders placed online, telephone orders will not qualify for free delivery. All our deliveries are on a signed for service ONLY please be aware it will be solely your responsibility to ensure someone is available to sign for the package. Free delivery is only available for England, Wales and southern Scotland postcodes.