The world’s best environmental monitoring solution just got better


The world’s best environmental monitoring solution just got better

IP Based SNMP Sensor Monitoring Device

The SPX+ is a versatile IP based sensor monitoring device. Connect up to 16 of AKCP’s intelligent sensors, 20x dry contact I/O’s, 0-5VDC or 4-20mAmp inputs, control relay outputs and monitor third party devices.

  • Equipped with Ethernet, Modbus RS485, EXP and BEB communications
  • Compatible with SPX+ EXP and BEB units, expand the capabilities of your device.
  • 1U rackmount brackets, Tool-less 0U mounting or DIN rail mounting options.
  • Notification by SNMP, Email, SMS and built in buzzer.
  • Compatible with all AKCP Intelligent sensors.
  • Start with base configuration and build up your device with modules you need.
  • Up to 80 virtual sensors.


Mean Time Between Failure – MTBF

AKCP is the oldest and largest data center environmental monitoring company in the world. Along the way we have introduced many hardware platforms and have learned many lessons. The SPX+ is our latest platform and incorporates our accumulated knowledge on how to build reliable, rugged embedded systems.

Since its recent release, the SPX+ has grown to an installed base of approximately 5,000 base units. On average we have 4 hardware failures per year that require RMA replacement. That is to say that the SPX+ is operating for 43,800,000 hours for every 4 failures. That is a MTBF of 10,950,000 hours. The sensors have an approximately similar record of durability.

The reason that this failure rate is so low is by design. The SPX+ was created for rugged environments. The components used in the SPX+ can withstand high-temperature environments because they generate very little heat. The SPX+ operates on 1 Watt of power. This stands in contrast to larger systems running more complex, and less reliable operating systems such as Linux.

Typical small computers often run at 300 Watts requiring a fan. The SPX+ doesn’t need fans or special cooling. The case is built from Aluminum, not plastic. The SPX+ has been tested in environmental chambers to be able to operate reliably at 70° C. During the manufacture every SPX+ is tested, then burned in for 96 hours in order to eliminate infant mortality. The system is put into stock awaiting a customer order.

AKCP is not only rugged in hardware, it is rugged in software. Rather than relying on large, untested, and unmaintainable open source projects, we write our own applications. This is more difficult but results in superior performance. We can maintain the code because we wrote it ourselves. If there is a bug that needs fixing, we can fix it. If there is a feature that needs adding. We can add it. This is not possible in larger systems relying on third-party applications.

SPX+ Modules

The below modules can be added to the standard configurations to build up the device with what you need. For example, if you wish to have 12 sensor ports, you can order an SPX8 and an additional sensor4 module. You can also build your unit using our online configuration tool to check that it fits in 1U or 0U rack mounting. If you exceed 1U then there is the option to continue the configuration on an additional U connected via BEB to the base unit.


sensor4 Additional sensor ports can be added to the base SPX+ module in blocks of 4. sensor4 modules are compatible with all AKCP intellligent sensors. Build a cost effective monitoring platform, able to monitor multiple cabinets from a single IP address.

Module Code :- S


Dry10/20 Dry contact modules come in several flavors. IO modules, and isolated input only. Use dry contacts for monitoring a variety of third aprty devices, door contact sensors, digital outputs from UPS, control panels and alarm panels. Use IO dry contacts to actuate responses to inputs.

Module Codes :- D1, D1i, D1iV, D2, D2i, D2iV


AC Voltage Detection Monitor 10x or 20x AC Voltage inputs, detect if circuits are energized or not. This module does not give a votlage reading, only the presence or absence of AC Voltage. Voltage range is 5-30ACV @ 44mA.

Module Codes :- D1ACV, D2ACV

Cellular Modem

Cellular Modem and Optional GPS The cellular data modem module gives the SPX+ ability to communicate over a cellular data network. An external antenna ensures a good signal can be received even if the SPX+ is inside a cabinet. Send SMS alerts directly from the SPX+ device, or connect it to our central monitoring platform, AKCPro Server, via a VPN connection. Cellular modems are available in 4G European and US bands. Optional GPS antenna can be added for geolocation of the device.

Module Codes :- MA, ME, M4A, M4E / GPS

4x 0-5VDC Input

4x Analog to Digital inputs This module is ideal for connecting third party analog sensors with a 0-5VDC or 4-20mAmp scale output. Many industrial sensors are available with this scale output, opening up the possibilities of monitoring many different sensors not provided by AKCP.

Module Code :- A2D4, A2D4 (4-20)

4x Mini Relays

4x Mini Relays This module includes 4x mini DC relays. Use them to switch on/off low current devices directly, or use them to drive larger relays. Ideal for systems and control, building and industrial automation.

Module Code :- 4MR

2x Mini Relay and 2x 0-5VDC Input

2x Mini Relay and 2x Analog to Digital inputs This module is a combination of the above modules, with 2x relays and 2x 0-5VDC or 4-20mA analog sensor inputs.

Module Code :- A2DMR, A2DMR (4-20)

Ball Valve Control Module

Ball Valve Control Module If you have DC motors or electronically controlled ball valves which require polarity reversal to turn in the opposite direction, this module is applicable. Ideal for water irrigation or industrial applications which require valve and motor controls.

Module Code :- VC

Internal UPS (4x AA rechargable batteries)

Internal UPS (4x AA rechargable batteries) This module provides backup internal power supplied by 4x AA rechargable batteries (batteries not included). Ideal for use in situations where poiwer may be unstable, to esnrue continued logging of data. Combine with a 3G or 4G modem for continued alerts even if your network is down.

Module Code :- UPS

SPX+ Standard Configurations

SPX+ is available in several standard configurations. These “off the shelf” units cover most peoples monitoring requirements. These base configurations can be built upon, adding features with additional modules. Use our online configuration tool to check your configuration meets 1U or 0U mounting dimensions.

  • 4x intelligent sensor ports.
  • 1x EXP / Modbus / RS485 port.
  • 1x BEB port.
  • 1U rack mounting, brackets included.
  • Short DIN rail mounted version available. (SPX4-D)
  • Basic configuration, build your customized device with additional modules.

  • 8x intelligent sensor ports.
  • 1x EXP / Modbus / RS485 port.
  • 1x BEB port.
  • 1U rack mounting brackets included.
  • Short DIN rail mounted version available. (SPX8-D)

  • 4x intelligent sensor ports.
  • 10x I/O Dry contacts. (Isolated dry contact options also available, please see list of optional modules)
  • 1x EXP / Modbus / RS485 port.
  • 1x BEB port.
  • 1U rack mounting, brackets included.
  • Short DIN rail mounted version available. (SPX4-X10-D)

  • 8x intelligent sensor ports.
  • 20x I/O Dry contacts. (Isolated dry contact options also available, please see list of optional modules)
  • 1x EXP / Modbus / RS485 port.
  • 1x BEB port.
  • 1U rack mounting, brackets included.
  • Additional modules will exceed 1U length and require 0U mounting, or additional 1U BEB unit.

  • 8x intelligent sensor ports.
  • 60x I/O Dry contacts. (Isolated dry contact options also available, please see list of optional modules)
  • 1x EXP / Modbus / RS485 port.
  • 1x BEB port.
  • 2U rack mounting, brackets included. (Optional mounting “back to back” in 1U)
  • Configuration consists of master SPX+ and additional BEB unit.

sensorProbeX+ Expansion Architecture

Every SPX+ comes with both EXP (Expansion) and BEB (Basic Expansion Bus) ports. These expansion ports give you the ability to add functionality to your base device, so your system can grow with your needs.

Basic Expansion Bus (BEB)

BEB is suitable for short distance expansion within your cabinet. Build up your system adding additional SPX+ BEB Remote units. Daisychain the expasion units up to a maximum of 18 meters for the total chain. SPX+ BEB Remote units are cost effective expansion when you place the unit within the same or neighbouring cabinet.

Basic Expansion Bus (BEB)

Expansion (EXP)

EXP is used where you need to extend the distance up to 300 meters. SPX+ EXP Remote devices can be daisychained, with a maximum of 300 meters between each unit.

Expansion (EXP)

AKCP smartRack System

Build a complete rack monitoring system connecting AKCP sensors to your SPX+. Fully SNMP compliant, monitor from your existing NMS or using our DCIM AKCPro Server.
AKCP smartRack System

Dimension : 44 (W) x 46 (H) low profile design
Expansion Port : EXP port connecting EXP Remote Unites
BEB port for connecting SPX+ BEB Remote Units – Maximum 4x BEB units per SPX+
Mounting : 0U Toolless rack mount, optional wall mount brackets, horizontal 1U mounting or DIN rail brackets.
Power : External 5V 3A Power Adapter
Input Voltage and Current ratings : 100V~240V – 0.22A
Status Indication : LED for power, network connection, sensor online and threshold status.
Internal Buzzer for audible alerts
Operating Environment : Temperature : Min. 0°C – Max. 70°C (Industrial Option available for Min. -25°C – Max. 70°C)
Humidity : Min 20% – Max. 80% (Non-Condensing)
MTBF : 10,950,000 Hours based on field experience with sensorProbe+ units
Base Unit : 4x Sensor Ports for connecting AKCP sensors
1x Expansion Out Port (Optionally used for Modbus)
1x 10/100 Ethernet Port
Max Sensors : Maximum of 150 onlined sensors, including Expansion Units and virtual sensors.
SPX+ Modules : 4x Sensor Ports module

10x or 20x Dry module, available in 3 configurations :

  • Configurable I/O dry Contact (0VDC/5VDC)
  • Input only 5V Dry Contact, opto-coupled input
  • Isolated input Dry Contact, from 5V to 20V voltage input signal
  • Isolated AC Detection Input 5-30ACV @ 44mA

3G or 4G cellular data modem with extenal antenna. (GSM/CDMA)

4x 0-5VDC / 4-20mA input for third party sensors

4x Mini relays for driving larger relays

2x 0-5VDC / 4-20mA input for third party sensors with 2x Mini relays

Internal mini UPS, 4x AA rechargable batteries

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