... /5VDC Battery:6V/7A Battery Monitor:160*160 Dot matrix LCD Memory:EEPROMS torage RLM-I Radon measurement instrument ... hours)3, Detector:Φ30 mmSemiconductor detector4, Monitor:160*160 Dot matrix LCD,White backlight5, Measuring range:0~999999Bq·m--36, ... 232 interface (9 pin ), can be connected with a micro printer and provide data interface protocol11, Memory:EEPROMStorage12, Working environment:-20 ...