Chapter 4. Using Special Features72 Model PM880 Portable Hygrometer User’s Manual4.11 Using Sleep ModeThe Sleep Mode keeps the PM880 in a state in which the unit appearsto be off. During Sleep Mode the unit is idle and consumes less power.When you want to use the unit again, it comes out of Sleep Mode quickly,performs an AutoCal and is restored exactly as you left it.4.11.1 Placing the PM880 in Sleep Mode1. Press the red power key for 3 seconds. The screen now appears similarto Figure 31.2. Press [F2] to place the PM880 in Sleep Mode.Figure 31: Shutdown Menu4.11.2 Resuming OperationTap the red power key. The PM880 powers on, performs an AutoCal andreturns to exactly where you left it.
