ARM-1000 Area Radiation Monitor


The ARM-1000 is the most versatile area radiation monitor on the market. In addition to the internal GM detector for local area monitoring, it has an option for external detector monitoring. The ARM-1000 has universal compatibility to existing 3rd party detectors due to its variable external detector voltage settings and is able to drive GMs, scintillators, and proportional counter detector probes. The high-visibility LED display can be configured to show gamma radiation levels, count rate or any other unit of measure. The ARM-1000 can even be integrated with monitoring devices such as pump vibration monitors or continuous air monitors for data collection and display. With an internal battery of 6-8 hours, the ARM-1000 can be deployed in the field and can be monitored remotely via one of three wireless telemetry options: Wifi, 2.4Ghz Radio, or 900 Mhz Radio.

SKU: ARM-1000 Category:



  • Variable external detector voltage settings = Universal Compatibility w/ 3rd party detectors
    • Thermo DA1-Probes
    • Mirion AMP100
    • Model 133-Series detectors
  • Internal GM-Detector (5 decade Range)
  • Integrated wireless communication
  • Configurable High Visibility LED display: 2-Line, 16 digit Display
  • Multiple power sources: 110v – Power over Ethernet – USB
  • Internal rechargeable Li-Ion battery: 6-8 Hours of Battery life
  • Dual alarm set points: (Low -warning, High-Alarm)
  • Dual Alarm indications: 105 dB(A) siren and High Intensity LED Strobe
  • Control of external devices:
    • o 4-12mA relay signal
    • o 3-Internal Contacts (Dry or Live)
  • Modular Design: add and remove features as needed
  • IP65 Rated
  • Drive External Check Sources
  • DE-9: RS-232 / RS-485
  • RJ-45: Ethernet with Power Over Ethernet (POE) support
  •  USB: Configuration Port
  •  Isolated AC Power Inlet

Radiation Detection 

  • Internal Detector (optional)
  • Detection Ranges
  • Compensated GM-tube
  • 0.1mR/hr- 4R/h
    1 mrem/h-100R/h

Power Requirements

  • AC Power
  • DC Power Input
  • Power Over Ethernet
  • 120-240 VAC
  • 12-24 VDC
  • IEEE 802.3at / 25.5W


  • Dimensions -excl. antenna (H x W x L)
  • Weight (excl. batteries)
  • Operating Temperature
  • 31.0 x 17.5 x 12.9 cm
  • 6 – 8 hours
  • -20 C To 50 C


  • Type
  • 16 dot matrix Digits (LED)

External Connections 

  • USB
  • DE-9
  • RJ-45
  • USB Power/ Configuration port
  • Rs-232 / Rs-485
  • Ethernet / PoE

900 Mhz Radio (XT Model suffix)

  • Range (indoor/urban RF line of sight):
  • Range (outdoor/ RF line of sight):
  • Transmit Power Output
  • Frequency Range
  • Receiver Sensitivity
  • FCC Part 15.247
  • Industry Canada (IC)
  • Up to 3000 feet (900 m)
  • Up to 1 mile (1.6 km)
  • Up to 500 mW
  • 902 MHz– 928 MHz
  • -110 dBm (9600 baud)
  • 4214A-9XTEND

Ordering Information

Model                  Description

ARM-1000            GM-Tube Area Monitor
ARM-1000            DA External Detector Monitor
ARM-1000            XT GM-Tube Area Monitor 900MHz XTend
ARM-1000            DNT GM-Tube Area Monitor 2.4GHz DNT
ARM-1000            W GM-Tube Area Monitor WiFi / Ethernet / PoE