... . 17, the lead plane has password operation. ensure system safety. 18, The circumferential lead plane trumpet interface.silence ... regular job blackout. 21, Entire wireless system, nonutility arrangement of wire. Installation go to the lavatory.Apply to the ... 2, the use of environmental conditions: indoor, ambient temperature -10 ~ 50 , relative humidity ≤ 90%, atmospheric pressure 86 ~ 106Kpa. 3, ...