【Upgraded Version】FNRSI GC-03 Geiger Counter Nuclear Radiation Detector, Portable 3-in-1 Meter for Real-Time NR/EMF/EF Monitoring, w/Alarm, Color Screen, GM Tube (0.01μSv/h Range)

[Rechargeable 3IN1 Decibel Meter] WESTOBIG Sound Level Meter, Digital dB Meter Noise Meter 30dB to 130dB Portable SPL Meter MAX Data Hold with Color Display Backlight

【Upgraded GC-01】WESTOBIG Geiger Counter Nuclear Radiation Detector, Personal Dosimeter X-ray γ-ray β-ray Radioactivity Tester Marble Detector, Portable Handheld Beta Gamma X-ray Monitor Meter

【Upgraded Model 10X Probe] DSO-TC3 Oscilloscope 3-in-1 Handheld Oscilloscope DDS Signal Generator Transistor Tester Oscilloscope 500Khz Bandwidth 10MSa/s Sampling Rate, 6 Types of Waveforms