GAUSS METER The new RDS-31S/R Multi-purpose Survey Meter continues the line of RADOS survey meters offering modern design and approach to radiation monitoring. RDS-31 is a small hand held, battery operated survey instrument using an energy compensated GM-tube as primary detector. Due to its versatile functions and durability it is suited for a wide range of applications in civil defense, industrial and laboratory use and others. RDS-31 is featuring excellent ergonomics; light weight and easy to handle, with visual and audible alarms and internal vibrator. The large LCD with Energy Save Backlight is well visible even in sunny conditions due to the illumination control. External probes of GMP-12 series, GMP-11/15 and Multirad LLR probes: TGS, Alpha 125 and Alpha Wound can be connected to RDS-31 by cable or by additional adapter extending the capabilities of the instrument. User protection while using external probe by measuring simultaneously instrument dose rate. Features: H*(10) ambient dose equivalent dose and dose rate Range of external smart alpha, beta and gamma probes for direct  connection with RDS-31 Large graphic screen, configurable backlight with automatic illumination control Audble buzzer and tactile vibration alarms High impact durable case construction, IP-67 immersion proof Internal memory to store measurements Optional WRM2 radio for wireless remote monitoring