Diy Assemble Geiger Counter Kit Counter Module Nuclear Radiation Detector With Sound And Light Alarm 4714260045225
ZandonÃ
1. 5V power supply, or 1.5V 3 batteries; 1.2V 4 batteries, current: 30mA - 12mA 2. Used to detect gamma rays from 20mR/h~120mR/h and 100~1800 off...
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