	Dose Rate Meter	Multi-Probe Radiation Meter (Built-In Double Gm Tubes)		Multi-Probe Radiation Meter (Without Built-In Double Gm Tubes)
Model	DM01	RM30		RM40
type of radiation	x γ
detector	double GM tubes
measurement range	1 μSv/h ~ 10 Sv/h		0.1μSv/h-10Sv/h	dose rate 0.1μSv/h-10Sv/h accumulated dose 0.01μSv-10Sv
displaying range	0.00 μSv/h~ 1Sv/h		0.01μSv-10Sv
inherent error			±15%(137Cs,0.1μSv/h-100μSv/h) ±10%(137Cs,100μSv/h-100μSv/h)	:±15%(137Cs,0.1μSv/h-100μSv/h) ±10%(137Cs,100μSv/h-100μSv/h)
measurement accuracy	± 15%（1 mSv/h，137Cs）
Power-supply mode			3.7V/5.2Ah，Rechargeable lithium battery
response time	<3s
energy response	±40%（60keV-1.3MeV）

Dose Rate &Multi-Probe Radiation Meter