EOTech 553 - Manual (Page 24)

change the brightness level up or down continuously in steps. Twenty (20) brightness settings
provide a dynamic range of 110,000:1 from the lowest setting to the highest setting.
4. Auto Shutdown
The Reflex Sight has an auto shutdown feature. If the sight is turned on by pressing the UP button,
it will automatically shut itself OFF 8 hours after the last pushbutton control is used. The sight
will automatically shut OFF after 4 hours if it is turned on by pressing the DOWN button.
2.1.5 Night Vision Mode On/Off Auto Shutdown
The Reflex Sight is compatible with Generation II, III, III+ and IV+ Night Vision Devices. At the
night vision settings, the reticle brightness is low enough that when viewed with a night vision
device, the reticle image does not bloom.
1. ON/ Night Vision Mode and 8 Hour Auto Shut Down
Pressing the NV Button (see Fig. 4) will turn the sight ON in Night Vision Mode. The sight will
turn on at Level 4 and automatically shut off 8 hours after the last pushbutton control is used.
There are 10 brightness settings in NIGHT VISION MODE with a dynamic range of 1000:1.
2. OFF / Turning Sight OFF
To turn the sight off, press both the UP and DOWN arrows simultaneously. Verify that the sight
shuts off by looking though the heads-up window with the night vision device.
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