The Server Technology® PRO2 Switched CDU provides control of outlet power and local LED input current
monitoring, allowing IT personnel to determine safe levels of loading on a per-phase basis while installing
equipment into the rack/cabinet. The integral PIPS® technology provides billing-grade accurate measurement
of current, voltage, active power, apparent power, power factor, crest factor, and accumulated energy at the

These power data points, along with temperature and humidity measurements (provided via optional
probes), are accessible through the built-in Web and CLI interfaces as well as through SNMP. The PRO2 Switched
"Master" CDU can be connected to as many as three PRO2 Switched "Link" CDUs to extend the network access
to the redundant or secondary power feed without the risks of a daisy chain linking configuration.


Sentry Cabinet PDU Specifications
Master CDU Link CDU Input Plug Input Current Input Voltage Rated Power

SEV-4501A IEC C20* ≤16A

220-240, L-N,

3680W @230V

Additional Features and Specifications
• Connector: (24) x IEC 60320/C13
• North American Rating (C13): 12A @208-240V (15 peak) ; Global: 10A @220-240V
• Connector: (6) x IEC 60320/C19
• North American Rating (C19): 16A @208-240V (20 peak) ; Global: 16A @220-240V
• LockedIn™ compatible. Locking outlets provide high-retention even for non-locking cords

Input measurement accuracy
• LED Current = ± 10% 0.1 amp (1.0 – 9.9amps) and 1 amp (>9.9amps) resolution
• GUI Current = ± 1% at 0.01 amp resolution (above 0.5 amp)
• Voltage = ± 1% at 0.1 volt resolution (nominal ± 10%)
• Active Power = ± 1% at 1 watt resolution
• Apparent Power = ± 1% at 1 volt-amp resolution
• Power Factor = ± 3% at 0.01 resolution
• Crest Factor = ± 10% at 0.1 resolution
• Energy = ± 1% at 0.1 kilowatt-hour resolution

Branch measurement accuracy
• Current = ± 3% at 0.01 amp resolution (above 0.5 amp)
Branch Circuit Protection
• UL489 compliant 2-pole, 20A trip circuit breakers, Two (2) branches, Rating: 16A @208-240V

• Dimensions: 69.00" (1753 mm) tall x 2.19" (56 mm) wide x 2.25" (57 mm) deep | Weight: 25 lbs 
(11.4 kg)
• Shipping Dimensions: 73" x 7" x 3" (186 cm x 18 cm x 8 cm) | Weight: 26 lbs (11.8 kg)
• Highlight Color: Choose Black, White, Red, Green, Blue, Yellow
• Operating Environment: 32°F to 140°F / 0°C to 60°C | 8%RH to 90%RH non-condensing | 6,500ft/2000m 
• Storage Environment: -40°F to 185°F / -40°C to 85°C | 8%RH to 90%RH non-condensing | 
50,000ft/15km elevation
• Quiescent / Unloaded Power Draw: < 10W for all configurations

Communications and Security
• 10/100 Mbps Ethernet (RJ-45 connector), RS-232 serial (RJ-45 connector)
• Two (2) temperature/humidity sensor inputs (4P4C), Link port (RJ-12) – {also on Link CDU}
• Web-browser GUI and command-line-interface (CLI): HTTP/HTTPS, SSLv3/TLSv1, SSHv2, Telnet, SNMPv2c 
and v3
• cTUVus Mark to UL 60950-1:2007 and CAN/CSA 22.2 No. 60950-1-07 + A1:2011
• TUV T-Mark to EN 60950-1:2006 + A11 + A1 + A12
• EMC to EN 55022 Class A, EN 55024, CISPR 22 Class A
• FCC Class A, Part 15
• CE Mark

Optional Accessories
• EMTH-1-1 Combination Temperature/Humidity Probe, 10ft (3m)
• EMCU-1-1B Environmental Monitor adding:
- Two (2) EMTH-1-1 temperature/humidity ports (one probe included)
- One (1) EMWS-1-1 water sensor port (probe sold separately)
- Four (4) dry contact (NO/NC) monitoring points
- One (1) 8-bit analog-to-digital converter (0 to 5VDC)
• SPM (Sentry® Power Manager):
- Monitor and manage multiple PDUs from a single point
- Monitor and manage alarm conditions
- Create reports and trends on stored data
- Analyze power usage per phase
- Optional appliance or virtual version
- VMware Ready2
• Mounting Brackets
- Buttons (KIT-0020) included for tool-less mounting (see diagram).
- See the Mounting Bracket Guide for further suggestions.
- Custom mounting options available. Contact your local Server Technology representative.
• Cable Retention Devices for non-locking cords
- EZip
- Cable Sleeve
- Wire Bails
• Device / Output LockedIn™ Power Cords
- UL Rated, or VDE Rated
Sentry Cabinet PDU Features

Network Monitoring
The PRO2 hot-swappable network card provides for HTTP(S), SSH, Telnet,SNMP, (S)FTP, SMTP, Syslog, LDAP(S), RS-232 serial, and more.

Branch Current Monitoring
PRO2 monitors current at each breaker branch and provides SNMP-based alerts and emails on high usage that risks a tripped circuit.

Star Multi-Linking
PRO2 provides the ability to link up to four power circuits using one IP
address. Primary link provides backup power to network card.

Branch Circuit Protection
PRO2 meets the UL and IEC 60950-1 requirement for branch circuit protection
through use of UL489 rated magnetic-hydraulic circuit breakers.

Hot-Swap Network Card
Network access is ensured when power is lost to the Master unit with
backup power provided by the primary link unit.

ST Eye Bluetooth Ready
The best CDU LCD is the one in your hand. Attach the ST Eye™ Bluetooth
module to PRO2 for access to power data and system settings.

Temperature/Humidity Monitoring
PRO2 Master and Link units each support two external 10' (3m) T/H
probes. Receive SNMP-based alerts and email notifications.

High Retention Locking Outlets
PRO2 receptacles have high retention and are compatible with Server Technology's LockedIn™ power cords (sold separately).

Outlet Control
On PRO2 Switched CDUs, cycle power to individual outlets or groups of
outlets to reboot servers. Or, power off unused receptacles.

Power Pivot™
The 90 degree rotatable power cord allows for standardized deployment
at any facility no matter where power must be routed.

Auto-ip Current Display
Easy-to-read LEDs display current per phase to help prevent overloads and
simplify three-phase load balancing in high-density cabinets.

Flexible Mounting
PRO2 includes standard button mounts along with provisions for
custom mounting brackets (contact Server Technology for details).

Per-Inlet Power Sensing
Meets ANSI C12.1 for billing-grade accuracy of Current per phase. PIPS
includes voltage, active power, apparent power, power factor, and energy.

High Temperature Rating
This product has been tested and approved for safe and reliable operation
in 60°C (140°F) data center environments.

Color Identification
Choose from six colors to designate circuits for CDUs in the data center.
Color options include Blue, Red, Green, White, Yellow, and Black.

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PRO2 Switched STV-4501 20-30A/16-32A 208V/230V (24) C13 & (6) C19

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