... modules,can be used around the world. 1.The lead plane adopt two frequency,four frequency GSM / GPRS industry modules, ... gose to the lavatory but gear power source.plane recording etc.Works. 17.The lead plane has password operation. ensure system safety. 18 ... The use of environmental conditions: indoor, ambient temperature -10 ~ 50 °C, relative humidity ≤ 90%, atmospheric pressure 86 ~ 106Kpa. 3.The ...