Headset Power

The headset will operate with either 4 AA batteries or panel power from 8-32 Vdc.

Panel Power Option

An optional power cord is provided for use in negative ground electrical systems only. Do not attempt to use with positive ground electrical systems. The power cord is designed to connect the battery module to the aircraft power via the cigarette lighter jack.

Power Cord

450 Locking

Figure 2

Panel Power Option

Battery Power

The battery module requires 4 AA batteries. Alkaline batteries are recommended for best performance. Do not use nickel-cadmium/NiMH rechargeable or lithium batteries.

1.Slide the battery door down in the direction of the arrow, then up to rotate the battery door (Figure 3).

2.Place the batteries into the battery module as shown.

3.Slide the battery door back into place.

Cellular telephone / auxiliary audio input – see above for details

Figure 3

Battery Installation

Headset Operation

1.Verify batteries are installed and headset powers on (see previous section.) Connect panel power cord (if not using battery power.)

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Telex Stratus 50 manual Headset Power, Headset Operation