Quantum Data Systems (H.K.) Ltd.

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Sentry 4870-XLS-4

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-48 VDC Remote Power Managemet

Sentry™ 4870 Remote Power Manager & Power Distribution Unit minimizes the impact of locked-up routers, DSLAMs, ATM switches and other high amperage equipment units on service provider's networks. CLECs, ILECs and ISPs use the Sentry 4870 to manage equipment in remote sites, co-location facilities and Telco central offices. The Sentry 4870 eliminates the need to dispatch a field service technician for manual intervention when devices lock-up. Using a Sentry 4870, the network operations center can quickly restart locked-up remote internetworking devices to ensure that the network maintains maximum uptime.

24-character Outlet Receptacles Names

Use the firmware interface (Web or serial) to edit individual outlet receptacles. Identify each receptacle with the device's serial number, ip address, asset allocation #, department or any other method to individually name outlets.

 Firmware Flash Upgradeable

Access new firmware updates via FTP for new firmware features and code releases. An update to the firmware does not affect the status of the power outlets.

HTTP/HTTPs Web Configuration & Control

Use the Sentry Web interface to configure each unit, including network settings, outlet naming & grouping, SNMP traps for environmental & power thresholds and firmware updates. Also use the Web interface to control individual or group outlets and monitor key values, including amperage load(s), temperature/humidity and other environmental conditions. SSL security provides a secure HTTPs connection.

Integrated Temp/Humidity Probes

Two (2) RJ-style connectors located on the face panel of the PDU's enclosure provide support for two (2) Integrated Temperature & Humidity Probes with ten-foot (10') cables provide real-time measurements in the data center cabinet.


LDAP (Lightweight Directory Access Protocol) is a software protocol for enabling anyone to locate organizations, individuals, and other resources such as files and devices in a network, whether on the public Internet or on a corporate intranet. Sentry firmware code 5.3b and newer  includes support for LDAP v3 and is configurable to operate with any Directory Service. It has been tested with these Directory Services: Microsoft’s Active Directory, Novell’s eDirectory, OpenLDAP

Load Sense

Individual input current monitoring ("Load Sense") provides real-time power measurement of the load in amps on each power outlet, accessible via firmware interface.

Rack-Mount Enclosure

"Horizontal" rack-mount enclosures are 17" wide and include standard mounting brackets for 19" cabinet rails.  23" brackets also available.

Remote Power Control

Individual or group outlet remote power control to cycle power and reboot any selected server(s) or other network device(s).  Use TCP/IP (HTTP, HTTPS, SSH, Telnet, SNMP) or RS-232 to communicate with each Sentry and rectify locked-up network devices. Assign outlets to a group for control of dual-power supply servers and other gear with a single command.  Create an unlimited number of groups with any combination of outlets associated to each group. Reduce Mean Time to Repair (MTTR) of a failing server by controlling individual power outlet receptacles to reboot any selected server or other device.

RS-232 Control

Serial control via any device with a bi-directional serial port, including a PC, laptop, KVM switch, Console Port Access switch, or terminal server.

Secure Access - SSH or SSL Protection

Secure Shell (SSH), sometimes known as Secure Socket Shell, is a Unix-based command interface and protocol for securely getting access to a remote device.  Sentry supports SSHv2. Secure Sockets Layer (SSL) is a commonly-used protocol for managing the security of a message transmission on the Internet. SSL is an integral part of most Web browsers (clients) and Web servers.  Sentry supports SSLv3/TLSv1.

SNMP Management & Event Notification

The Sentry family of products supports the Simple Network Management Protocol (SNMP). This allows network management systems to use SNMP requests to retrieve information and control power for the individual outlets. The Sentry includes an SNMP v1 agent supporting standard MIB I and MIB II objects. A private enterprise MIB extension (Sentry3 MIB) is also supported to provide remote power control. SNMP traps can be generated for various events, including Input Current Load Thresholds (min & max), Temperature Thresholds (min & max), Humidity Thresholds (min & max), water indication, closed contacts (cabinet doors open/close), as well as notification of any time an outlet status is changed (on/off).

Specifications and Features

Item #
Power Input 
 Power Output
-48 VDC Remote Power Management>Four TPC-fuse protected 70-amp outlets >Input Power Terminal Blocks
>Feed A and B (each)
>100 Amps DC at 48V
>4 output terminal pairs; (dual-stud terminal blocks for compression lugs)
>70-Amp max load per output pair
Option C
Integrated Global Secure Modem 56 Kbps    
Temperature and Humidity Probe, 10'    
23" Mounting Brackets    

4 TPC fuses (3,4,5,6,7,8,10,12, 15, 20, 25, 30 ,40, 50, 60, or 75-Amps)

RS-232 Data Format

>1200, 2400, 4800, 9600, 19200, 38400 or 57600;

>8 data bits; no parity; 1 stop bit

Technical Specifications


»17" W (w/19" mounting brackets) x 3.5" H (2 RU) x 16" D

»16 lbs.

Communications Interfaces

» 10/100 Base T Ethernet TCP/IP: SSH, SSL, HTTP/HTTPs (HTML web interface), SNMP MIB, Telnet; half/full duplex, auto-negotiating

» Integrated Global Secure Modem 56Kbps (Option C)

» Console RS-232, RJ45

» External Modem RS-232, DB9F Speeds

Access Security

» SSHv2, SSLv3/TLSv1, MD5, Active Directory w/ LDAPv3

» 16-character username/password authentication

» Individual accounts with restricted access rights

Conformance & Agency Approvals

» TUV-GS marked to EN60950

» cTUV-us marked to UL 1950 and CSA C22.2 No.950-95 NEBS GR-1089-CORE

» GR-63-CORE » Section 3.2

» Section 4.2 » Section 7

» Section 5.2 » Section 9 HTML GUI Interface


One Year



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