Specification:
Sensor: Gm counter tube
Measuring range: 0.05usv- 50msv
Measurement accuracy: -17%~+25% based on i7cs y
Working environment: Temperature -20°c~50"C; humidity <95%rh without condensation
Battery life: 20 days (continuous measurement, no particle sound)
Charging time: 34hour
Charging interface: Type-c interface (green light is always on when charging, full off)
Alarm response time: <10s
Typical power consumption: 13mw (without particle sound, the screen is off)
Alarm threshold deviation: -17%~+25%
Size: 120*65*25mm

(Note: If the price is more than 50$, we are not responsible for any after-sales service. If you mind, please do not shoot)

Packing list:

Dosimeter*1
Usb data cable*1