Dose Rate Alarm Lamp GWL 10m

GWL 10m

Gamma warning lamp with adjustable alarm thresholds for room monitoring and for the determination of restricted areas.


Fields of application

NDT, Fire Brigades, Civil Defence, Nuclear Technology, Industry



The GWL10m is an accumulator operated, self-contained dose rate alarm unit for the detection of gamma radiation and X-rays with four alarm thresholds, triggering optical and acoustic alarm when being exceeded. The acoustic alarm can be switched off, if required.

The instrument, designed for operations in "heavy-duty" environments,
is EMC-proof and equipped with a robust and splashproof housing.
The GWL10m is preferably used for room monitoring and for the determination of restricted areas where a given dose rate has been achieved.

The GWL10m is supplied together with a recharger unit for recharging the built-in accumulator.

Optional accessories

  • robust tripod
  • special version with motion sensor triggering an acoustic alarm when a person approaches towards a danger zone with increased radiation level


Technical Data

Kind of radiation gamma radiation / X-rays (DC installations)
Detector energy compensated GM tube
Measurand ambient dose rate equivalent Ḣ*(10)
Alarm thresholds 7.5 µSv/h, 25 µSv/h, 1 mSv/h, 10 mSv/h
Acoustic alarm > 93 dB(A) measured in 30 cm distance,
can be switched off
Energy range 40 keV up to 1.3 MeV
Temperature range -30°C up to +60°C
Power supply accumulator 
(operating time with fully charged accumulator approx. 48 hours, without acoustic alarm)
Housing aluminium combined with high impact plastic, 
protection class IP65
Dimensions/Weight (120 × 120 × 250) mm
 2300 g (with accumulator)