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Expert Power Control 8221-1

12-fold switched PDU with integrated current metering and monitoring for TCP/IP networks

Expert Power Control 8221-1 enables switching and metering of electrical appliances through TCP/IP network or serial interface. The rear panel disposes of 12 load outlets (max. 10 A). These Power Ports are individually switchable through web interface, serial interface, SNMP or a button directly on the device. Moreover SNMPv3, SSL, IPv6, Telnet, Radius and Modbus TCP support are incorporated.

Six Power Ports each of Expert Power Control 8221-1 are pooled into one bank. Both banks dispose of two energy meters each. Various electrical dimensions are measured on the supply lines. Two seperate supply lines enable switching of 32 A resp. 7500 W (dual circuit). Sensor interfaces allow monitoring of ambient temperature, humidity and air pressure by optional available sensors. Connected consumers can be switched by an IP watchdog through configured sensor or energy metering thresholds.


Expert Power Control 8221-1


  • 12 load outlets in 1 rack unit
  • 2 independent banks of 6 load outlets
  • Total switching power: 7500 W
  • Energy metering per bank
  • 2 interfaces for optional sensors
  • Port switching also by set sensor thresholds
  • IPv6, SNMPv3, SSL, Telnet, Radius, Modbus TCP


  • 12 Power Ports individually switchable directly on the device, via HTTP, command line tool and RS232 serial interface
  • 2 energy meters per bank, one meter continuously, the other resettable
  • Metering of energy, current, power factor, phase angle, frequency, voltage and active / apparent / reactive power
  • Latency time of 1 second prevents simultaneous power-up of multiple Power Ports
  • Paired switching of outlets possible, e.g. output 1 of bank 1 simultaneously with output 1 of bank 2
  • Status and power-up delay individually adjustable for each Power Port after power blackout (0...9999 seconds)
  • Programmable turn-on/turn-off sequence (batch mode) enabling automatic switching of Power Ports to previous state after configurable time period
  • Previous state of Power Ports can be automatically restored after reboot of device
  • 12-channel watchdog, an individual watchdog (ICMP/TCP) can be assigned for each Power Port
  • 2 independent power inputs of 230 V for the same or different phases
  • A clearly visible LED display per bank for total current, IP address, sensor data and error reports
  • Dedicated high-inrush relays avoid welding of relay contacts at start-up peaks
  • 2 interfaces for optional sensors for environmental monitoring (see Accessories)
  • Port switching possible by configured sensor thresholds by IP watchdog
  • Internal beeper for acoustic alarm for set sensor thresholds
  • Integrated overvoltage protection prevents damage of device and of connected consumers (L-N 10 kA)
  • Free Android App and iOS App allow access from anywhere
  • Low internal power consumption, max. 5 W
  • Developed and manufactured in Germany


  • Dynamic IP address allocation by DHCP or manual allocation with static IP address
  • IPv6-ready
  • Firmware update over Ethernet during operations (without reboot of device or load outlets)
  • SNMPv1, v2c, v3 (Get/Traps)
  • TLS 1.0, 1.1, 1.2
  • Syslog support
  • IP Access Control List
  • Secure login through SSL
  • Configuration and control via Telnet possible
  • Radius and Modbus TCP support
  • Comfortable configuration by web browser, Windows or Linux tool
  • 10/100 Mbit/s
Switchable Power PortLoad outlets IEC (max. 10 A)RS232 interfaceDual-CircuitNetwork interfaceOvervoltage protectionMetering electr. dimensionsEnergy meterProgrammable turn-on/-off sequenceInterface for external sensorsInterface for calibrated sensorsiPhone/Android App for remote access
Electrical Connections
2 power supplies (IEC C20, max. 16 A, 230 V)
2 x 6 load outlets (IEC C13, max. 10 A)
1 Ethernet connector RJ45 (10/100 Mbit/s)
1 serial interface RS232 (Sub-D, 9-pin)
2 sensor inputs (RJ45) for optional sensors
Technical Details
19 inch, 1 height unit
LxHxD: 43.9 x 4.4 x 19.5 cm (without brackets)
Weight: ca. 2.9 kg
Operating temperature: 0-50 °C
Storage temperature: -20 - 70 °C
Relative humidity: 0 - 95 % (non-condensing environment)
Order code
Scope of delivery
Expert Power Control 8221-1
Quick start guide
Description File name Version Date Size Changes to previous version/Comments
Manual manual-epc8221-8226-series.pdf 2.7.1 15/03/2021 4.10 MB

User manual

Product Brief gude-product-brief-epc8221-8226.pdf 04/04/2019 584.16 KB

Short product description

Quick Start Guide schnellstart_quickstart_ip-devices.pdf 1.4 12/04/2021 914.35 KB

Quick start guide (leaflet)

Declaration ce-declaration_epc8221-8226_02-07-2018.pdf 02/07/2018 108.19 KB

CE declaration of conformity

Firmware 1.8.6 28/06/2021 824.27 KB

Latest firmware and MIB table as zip file. Firmware can be installed via webinterface of device.

Revision history

System Tool 2.7.13 10/02/2021 755.47 KB

Windows-Tool for firmware updates and network configuration

System Tool gblc-v0.7.11.tar.gz 0.7.11 11/08/2015 139.15 KB

Linux-Tool for firmware updates and network configuration