This popular configuration includes the G115 meter paired with the H265 probe.  The GSM-115 is a microprocessor-controlled instrument for the budget minded. It is a digital instrument with an analog display.  Comes standard with probe-saturation and other error indicators.  The H265 is the best all purpose detector available. It is a pancake G-M detector sensitive to most alpha, beta, & gamma Radiation.

Meter Spedifications

• Input Sensitivity 0.050v
• Dose/CPM Switchable Internal Dose/CPM switch
• Four Linear Ranges (other scales available) X1, X10, X100 & X1000--Meter Scale 0-500 CPM
• Other dose scales and Sievert Scales available
• Calibration Controls Each range has separate non-interacting potentiometer
• Diagnostics Low Battery, Overload (Saturation)
• Range Adjustment Manual Range Adjustment
• Electrical Non-Linearity < 5%
• Response Time 4-20 seconds full scale (continuously adjustable)
• Drift < 5%
• Environmental -20⁰F (-28⁰C)-140⁰F (60⁰C) | 5-95% RH IPX4 Housing
• High Voltage Adjustable 300-1500 VDC | Regulation ±1%
• Battery 2--9 vdc Alkaline (Nominal 200 hrs Operation)
• Meter Ruggedized, High Torque, Taunt band, 2.5"
• W/ Analog Read out
• Circuitry Digital Microprocessor Controlled
• Dimensions 5.5" (14cm) H X 3" (7.5cm) W X 7" (18cm) L
• Weight 2.25lbs (1kilo) W/ Batteries
• Construction Heavy Duty Cast Aluminum & Stainless Steel

Probe Specifications

• RANGE 0--200 mR/hr Dose (based on Cs 137 calibration)
• ENERGY RESPONSE Alpha--3.5 MeV min, Beta--100 keV min, Gamma--20 keV--2MeV
• OPERATING VOLTAGE 900 vdc
• WINDOW DENSITY 1.6 mg/cm²
• DEAD TIME 20 μSec
• SENSITIVITY TO Cs 137 2,500 CPM/mR/hr
• SENSITIVE AREA 14 cm²
• ENVIRONMENTAL -20°F (-28C)-140°F (60°C) 5-95%RH IPX4 Housing
• DIMENSIONS 2.74" (7cm) DIAMETER X 5.511" (28cm) LONG

WEIGHT 1 POUND (.5 kilos)