Reference only — this item is no longer available. This product has been discontinued and cannot be ordered. We keep the page online so the specifications and documentation stay available to anyone still running the equipment. Current replacements are listed further down.

Discontinued

Radstar Electronic Continuous Radon Monitor (RS300) CRM w/USB Cable

Reference only — not for sale

Model	RS300
Manufacturer	RadStar
Category	Radon Testing
Status	Discontinued

Browse all Radon Testing Ask us for a replacement

Product details (archived)

The information below is retained for reference only. This item is discontinued and cannot be ordered.

Professional Electronic Continuous Radon Monitor, Model number RS300, Radstar CRM is supplied with USB Cable & Calibration Certificate.

No longer available. Manufacturer is planning to twilight and then discontinue this item shortly.

The Radstar 300 series professional CRM is the top choice by Home Inspectors & Environmental Testing Companies.

Features include:

Set Up Delay feature. With one click you can drop either the first 12 or 24 hours off of the test reading.
Ionization chamber detector.
Accurate measurements in a wide range of temperatures and humidity.
Internal memory.
Stores minimum, maximum and average readings.
Print or download to a laptop or desktop computer (printer sold separately).
Lightweight, durable and tamper-resistant.
Software is available for downloading to your laptop or desktop PC*.
Continuous measurement of radon gas - Provides hourly and average readings.
AC power / battery operation.
Accurate measurements in a wide range of temperatures and relative humidity.
Nominal sensitivity: 0.2 cpm/pCi/L.
Field worthy, sturdy construction.
No moving parts - No pumps or filters to maintain or replace.
Minimal setup time required.
Easy tripod attachment: (2) 1/4" x 20 Threaded Tripod Mounts.
Serial port for onsite printing (to optional printer) or computer download.
Keyed operation with keypad lockout.
Instrument motion sensor.

Supplied with:

USB connector cable (28262).
Calibration certificate.
1 year limited manufacturers warranty.

* Install on Windows operating systems, on other operating systems like Mac, you may have to use a PC Emulator software to run the Radstar Software

Accuracy	less than 10% deviation
Measurement	Radon Gas (Rn-222 Alpha)
Principle of Operation	Pulsed Ionization Chamber
Units	picoCuries per Liter
Sensitivity	0.27 cpm/pCi/L
Dynamic Range	0.5 to 150 pCi/L
Linearity	plus or minus 10% Best straight line
Lower Limit of Detection	0.5 pCi/L
Data Storage (nonvolatile)	Up to 240 readings, wrap on overrun
Sampling Mode	Passive diffusion
Measurement Interval	1 hour
Maximum Number of Intervals	240
Continuous Measurement Range	1 hour to 10 days
Shows Alpha Counts	Yes
Calculates Average Measurement	Yes
Data Transfer Software (Windows)	RadStar Data Capture Utility Version 4.1
Tilt Switch	Yes
A/C Power Fail Detection	Yes
Key Switch Lock-out	Yes
Physical Dimensions	7"H x 8"W x 4.5"D
Weight	2.5 pounds
Color	Green & Black
Operating temperature	50° to 90°F
Operating humidity	0 to 80% RH non-condensing
Display	None
Operating Indicators	Green A/C Power, Red Testing LED
Output	RS-232 serial port
Battery Operation	5 to 8 days; internal NiCad
Battery Recharge Time	12 Hours
Power Supply	AC Wall Transformer (110vAC to 12vDC 800mA)

Downloads

RS300 Operating Instructions (PDF format)

Available Accessories

Software version 4.1 Notes:

Software support:

Requires Windows 7 or later operating system.
- MacOS is not supported (we recommend using emulator app).
Tablets, netbooks & Chromebooks are not always able to be supported at this time.

Software Version 4.1 features include:

Customizable Report
Save/Archive Tests on your PC
Export Data for Your CRM or Reports
Enter Tester Information
Enter/Type in Test Details
Does NOT support RS500 model RadStars
Does NOT support Windows Vista or older operating systems

Quick Start Guide

Plug power adapter marked RadStar Power Supply into any 120VAC outlet. RS300 International power supplies are provided with plug adapters and may use any 120/240VAC 50/60Hz single phase outlet.
Plug free end of power adapter into left side of RS300. Green LED should come on.
Insert key and turn to [ Keypad On ].
Press and hold the [ Hold to Clear ] button until the beep tone stops to erase any previously stored test data. There will be a short beep to indicate the memory has been cleared.
When you are ready to start the test, turn key to [ Measure On ] position and remove the key.