... Monitor:160*160 Dot matrix LCD Memory:EEPROMS torage RLM-I Radon measurement instrument Technical parameters 1, Power supply:220VAC/5VDC ... , can set9, 15minutes fast.10, Data interface: RS-232 interface (9 pin ), can be connected with a micro printer and provide ... ~90%RH13, Size:385mm×370mm×235mm14, Weight:3.5kg RLM-I Radon measurement instrument