TM 5-3610-295-13&P-12-2.PMT PROCESSOR CONTROLS AND INDICATORS.Figure 2-2. PMT Processora.On-OffSwitch(1)- Used to turn processor on and off.b.TimerLight(2)- Indicates when timer is operating.c.TimerActuator(3)- Turns the internal timer and the timer light to on.2-2