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This simple nuclear radiation detector can detect x-rays, gamma rays, beta rays, and can perform radioactive dose detection on marbles, antiques, jades, iodine 131, medicals equipment and various unknown minerals for decoration. If you are looking for this product, come and have a try, it will not let you down.

Features:
Sound and light alarm ways can better remind you, give you a better use experience.
This product uses an NE555 integrated circuit and peripheral electronic component to form an oscillator, and transmits power to the diode voltage doubler circuit through inductive energy storage. The end of the voltage doubler circuit can output a high voltage of 400 volts for Geiger counters.
Wide Applications: This nuclear radiation detector can detect x-rays, gamma rays, beta rays, and can perform radioactive dose detection on marble, antiques, iodine 131, medicals equipment and various unknown minerals.
Support most Geiger tubes: M4011 can be installed directly, other models cannot be installed on the board, but the flying leads can also be used (digital multimeter measures the positive anode of the Geiger tube to the negative anode of the power supply, adjust the blue potentiometer until the multimeter shows direct current 170 volts).
An external screen or pointer meter can be used as monitoring, the output signal is interrupt output, the waveform is the falling edges of the pulse, and the low level is valid.
The circuit structure is stable and the failure rate is extremely low, you can use it for your daily needs.

Specifications:
Mateial: printed circuit board
Geiger Tube Model: M4011
Type-C interface power supplys: 5V1A
Power consumption current: 20mA
Item size: 92 * 61mm / 3.6 * 2.4in
Item weight: about 40g / 1.4ounce
Package size: 150 * 100 * 40mm / 5.9 * 3.9 * 1.6in
Package weight: 60g / 2.1ounce
Tube M4011 Specification:
Diameter: Φ10±0.5mm
Total length: 90±2mm
Starting voltage: <350V
Recommended working voltage: 380V
Minimum ping-length: 80V
Maximum ping-slope: 10%/80V
Working voltage: 550V
Maximum background count rate: 25 times / min
Lifetimes: >1 × 109 pulses
Detection: X β γ ray
Packing list:
1 * Assembled Radiation Detector Kit