PCU | Probe Control Unit | 2.4GHz 900MHz Ethernet

Probe Control UnitThe Probe Control Unit provides network connectivity to an attached gamma radiation detection probe.  The PCU is an IP66 weather resistant device suited for outdoor mounting and monitoring in harsh industrial conditions.  The PCU (Probe Control Unit) collects data from an externally attached probe and analyzes the data for alarm messages. The data is then passed on to a monitoring software via Ethernet, 2.4GHz or 900MHz uplink radio if installed.  

The PCU is equipped with internal solid state relays to turn on the built in strobe light, sounder or other externally connected alarms. The PCU is also equipped with 3 status LEDs notifying users of the system status.  


Product Overview

Probe Communication

PCU ConnetionsThe PCU supplies power and communicates with an externally connected probe through an external DB-9 compatible with RS-232 or RS-485 standards.  The PCU is able to read and interpret raw counts for each channel, status messages, etc. and then has the option to forward the information to a wired or wireless connected network.

Alarm and Relay Control

In a standalone mode, the PCU is used without external data connectivity, and serves the function of monitoring a probe and providing an alarming capability.  The PCU has ultra loud 104 dB(A) sounder and flashing beacon light to alert nearby users of dose alarms.  The external Digital I/O port expands alarm capabilities by providing relay control for system status, alarm and fault indications.

Long Range Wireless Connectivity

In addition to Ethernet connectivity, the PCU has the option to be equipped with a 2.4GHz or 900MHz long range wireless uplink radio.  This data can then be received by a base radio where it can uploaded to a server to process and analyze the probe data.

Software Compatibility

The PCU is versatile and can be integrated into a many different remote monitoring systems.  The data transmitted is formatted in a Siemens protocol, and is compatible with the RemoteDNA RAD Control software package in addition to Thermo ViewPoint and TeleTrak systems. 


Link2-Base Specifications

Overall Size

5 x 10 x 15 inches

Enclosure Size

4.3 x 9 x 13 inches

Enclosure Rating


Alarm Relay Max Switching Voltage

48 VDC

Alarm Relay Switching Current

1.5 A

Wireless 900 MHz Power Output

0-30 dBm

Wireless 900 MHz Frequency Band

902-928 MHz

Wireless 900 MHz FCC ID


Wireless 2.4 GHz Power Output

0-18 dBm

Wireless 2.4 GHz Frequency Band

2401-2495 MHz

Wireless 2.4 GHz FCC ID


Supply Voltage

12-24 VDC

Supply Wattage

<5 W

Ambient Temperatue

-20 + 60 C

RoHS Compliant


Link2-Base Configurations

Part Number
Radio Model Number
CDM72014 PCU with 2.4GHz Radio and Ethernet WIT2410M4G
CDM72015 PCU with Ethernet Only XBP24BZ7UIT-004
PCU with 900MHz Radio and Ethernet