A sidewall GM tube counter is the classic Geiger counter and the cheapest way to start, from about $55. It reads gamma, X-rays and most beta, which covers background checks, food, rocks and most antiques. It can’t see alpha. The cheaper models differ most in range: some stop reading near 330 µSv/h, while others go into the thousands, which matters if the counter is for an emergency kit. Wi-Fi models post readings to an online map without a computer.
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Full ranking 9
- GQ GMC-500+#1 of 9Full review
The GQ to buy if you want a counter that keeps working at high dose rates. It suits emergency kits as well as everyday monitoring.
Amazon $128$128GM tube138 CPM/µSv/h42,500 µSv/h - GQ GMC-500#2 of 9Full review
A good value desk or window monitor that posts readings online over Wi-Fi. Pick the 500+ if you want readings at very high levels.
Amazon $118$118GM tube138 CPM/µSv/h4,250 µSv/h - MOESAPU FS-5000#3 of 9Full review
A cheap counter with a wide listed range for an emergency drawer. Its low sensitivity makes it a poor choice for checking samples.
Amazon $64.99$64.99GM tube60 CPM/µSv/h50,000 µSv/h - FNIRSI GC-01#4 of 9Full review
A cheap pocket Geiger counter for a curious first look at background radiation. Serious users will want more sensitivity and logging.
Amazon $51.29$51.29GM tube80 CPM/µSv/h- - GQ GMC-800#5 of 9Full review
A cheap, easy-to-read beta-gamma counter with a big screen and a lot of memory. Good for a first counter at home.
Amazon $85.98$85.98GM tube132 CPM/µSv/h2,000 µSv/h - GQ GMC-300S#6 of 9Full review
A basic, cheap beta-gamma counter for checking background levels and hobby samples. Buy it to learn, not for emergencies.
Amazon $55.98$55.98GM tube132 CPM/µSv/h328 µSv/h - GQ GMC-320 Plus#7 of 9Full review
A long-running data-logging Geiger counter for steady background monitoring at a desk. The GMC-800 costs about the same and publishes more.
Amazon $97$97GM tube-328 µSv/h - FNIRSI GC-03#8 of 9Full review
A cheap combined radiation and EMF meter for casual checks around the house. It is not a precise radiation instrument.
Amazon $79.99$79.99GM tube80 CPM/µSv/h- - Mazur PRM-7000#9 of 9Full review
A rugged, long-running beta-gamma survey meter for people who want an instrument-grade build. Most home users get more for the money elsewhere.
Amazon $449$449GM tube45 CPM/µSv/h5,000 µSv/h
