Ludlum model 3500-1000RWM Meter.  Detectors sold separately

(Actual unit in photo gallery)

• Microprocessor Based Electronics
• Audible and Visual Alarm Indicators
• Dynamic Alarm Circuit for Optimal Sensitivity

Add a Counts.Pro for $499 to turn your meter into a digital scaler/ratemeter/cloud connected datalogger!  Take your meter to the next level with Counts.Pro