So you are worried about exposure to nuclear radiation at your place? The Rad Guard Nano 1 is a compact gadget that offers continuous detection. It comes with an early warning system (flash/blink) and displays current and average readings. It also shows the data on a graph.
The Rad Guard Nano 1 from PSI Savior has a radiation detection range of 0.01usv/h – 100usv/h. This tiny geiger counter has a Type-C port for charging. It runs on a 120mAh battery. It has Bluetooth support.