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OTX2400A Laser Rangefinder
Specifications & Features
Magnification
Objective Lens Diameter
Close Focus
Eye Relief
Exit Pupil
Field of View
Water-Resistance Rating
Lens Coating
Housing Material
Dimensions
Total Wt. (including battery)
Laser Type
Display Type
Range Response Time
Battery Type
Battery Life
Laser Range (Reflective)
Laser Range (Tree)
Laser Range (Deer)
Horizontal (Angle Corrected) Mode
Angle with Line of Sight Mode
Archery Mode
Gun Mode with Ballistics
Golf Mode
SCAN Mode
Bluetooth®
Quick Start Guide
6X
21 mm
6 yards
16 mm
3.5 mm
31.50 ft. at 100 yds.
IPX4 (Water-Resistant)
Fully Multi Coated with Rain Repellent
Composite with Rubber Armoring
4"x 1.44"x 3.11"
4.25 oz.
905 nm Class 1 Eye-Safe
Red Reflective OLED
0.1 seconds
CR-2 3-volt Lithium
Approximately 10,000 Readings
6-2,400 yds.
6-1,400 yds.
6-950 yds.
Yes
Yes
Yes
Yes
(Applied Ballistics
Yes
Yes
Yes
Ultralight®)

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Summary of Contents for Astra OTX2400A

  • Page 1 OTX2400A Laser Rangefinder Quick Start Guide Specifications & Features Magnification 21 mm Objective Lens Diameter Close Focus 6 yards 16 mm Eye Relief Exit Pupil 3.5 mm 31.50 ft. at 100 yds. Field of View Water-Resistance Rating IPX4 (Water-Resistant) Fully Multi Coated with Rain Repellent...
  • Page 2: What's In The Box

    What’s in the Box? ◆ 6 Power x 21mm Laser Rangefinder Monocular ◆ Soft Premium Carry Case ◆ Microfiber Lens Cleaning Cloth ◆ Adjustable Neck-style Lanyard ◆ Astra Optix™ Decal Sticker ◆ CR-2 3-volt Lithium Battery (Battery Pre-Installed) ◆ Quick Start Guide...
  • Page 3 Your Rangefinder at a Glance Power (Range) Eyepiece Rubber Button Diopter Grip (Top) Focus Focus Objective Lens (21 mm) Class 1 (905 nm) Eye-Safe Laser Lens Laser Receiving Mode Mode Lens Lanyard Battery Rubber b er Button Button Attachment Cover Grip Grip (Bottom)
  • Page 4: Quick Start

    ◆ 1 = Lowest brightness setting Aiming Reticle are clear and focused. ◆ 5 = Highest brightness setting Press the NOTE: For some Astra Optix models, Power Button Rotate Eyepiece the display brightness setting is the last item in the menu. If the brightness setting is not the first...
  • Page 5 Quick Start 4. Measuring Distance: Aim the Aiming 5. Menu Settings - Button Operation Reticle on the object you want to range Summary and press the Power Button to display the distance. Your unit factory default Press Power setting is the Horizontal (Angle Button to turn Corrected) Mode.
  • Page 6 Quick Start 5.1. Menu Settings - Menu Operation 5.3. Select the Operation Mode: Summary Press the Power Button to cycle between Standard Mode (Std), Archery ◆ Brightness Setting Mode (ArCH), Golf Mode or Gun Mode. -1 thru 5 When the selection you want to use is blinking, press the Mode Button to ◆...
  • Page 7 Quick Start 5.5. Gun Mode with Ballistics Selection: Ballistics® Operation Mode: ◆ Holdover Units Selection: MOA or ◆ Applied First select Gun mode. Next, choose MIL - Press the Power Button to cycle between ABI (Applied Ballistics® Internal through these selections and press the Mode) or ABE (Applied Ballistics®...
  • Page 8 The Applied Ballistics® The device name in this Google Play (if Android start-up screen will example: OTX2400A-0001 device). Search for the appear. Press the power will appear just below “AB Synapse - SORD” button to turn on your “Select Device.” Press on App in the App store as rangefinder, and press...
  • Page 9 Quick Start 5.6. How to set up your rangefinder with the Applied Ballistics® Phone App: ◆ Pair the Rangefinder ◆ Setting up in the App - ◆ Setting up in the App - Device with the App: Choose your 5 most often Set up your 5 most often Look in your rangefinder used load profiles: used load profiles:...
  • Page 10 Quick Start 5.6. How to set up your rangefinder with the Applied Ballistics® Phone App: ◆ Setting up in the App - ◆ Setting up in the App - ◆ Setting up in the App - Choose your 5 most often Choose your 5 most often Choose your 5 most often used load profiles: used load profiles:...
  • Page 11 Quick Start 5.6. How to set up your rangefinder with the Applied Ballistics® Phone App: ◆ Setting up in the App - ◆ Setting up in the App - ◆ Setting up in the App - Select active profile: Go back to your HUD Choose your 5 most often screen: used load profiles:...
  • Page 12 Golf Mode will display the nearest distance value (Golf Flagstick) of a group of targets that are within your field of view. ◆ Under ideal conditions, your Astra Optix™ Laser Rangefinder can measure the distance of reflective objects out to 2,400 yds. It can also measure a deer out to 950 yds.
  • Page 13: Register Your Product

    21CFR1040. 10/11. We are here to help! Don't hesitate to reach out to us if you have any questions or concerns about your product. On behalf of the Astra Optix family, we want to thank you for your purchase and support.