DRM-1 Data Radiation Monitoring System The DRM-1 is a compact area radiation monitoring system offering unparalleled features for standalone or wireless area monitoring. Features & Specifications - Wide range of monitoring utilizing GM or CsI detectors - Multi-frequency Hopping Spread Spectrun (FHSS) radio for remote surveillance - DRM-1: Two energy compensated, auto-switching GM tubes (5 mircoR/hr to 1000 R/hr) - DRM-1D: CsI detector for greater sensitivity for Homeland Security Monitoring applications - Optional external flashing light and/or siren alarmv - AC power with NiMH battery backup (8 hours) - Rugged, lightweight metal case - Configuration and calibration software included - 900 MHz or 2.4 GHz WRM2 radio (FHSS) -Compatible with WRM-Plus using external transmitter