The Signify Laser Range Finder (Model: EA2258, Product Code: 709435) is a versatile optical instrument designed for precise distance measurement and other advanced functionalities. Combining the features of a common telescope and a laser distance-measuring device, it utilizes advanced microprocessor and digital technology to calculate distances by measuring the time it takes for laser pulses to travel to a target and back. This device is suitable for both sports and recreational activities, offering a range of measurement modes to enhance user experience and decision-making.

Function Description:

The primary function of the Laser Range Finder is to measure the distance to a distant object. Beyond basic ranging, it is capable of measuring height, slope angles, and speed. The device is designed to be eye-safe, compact, and lightweight, operating on a single CR2 3V lithium battery. Its measurement system is robust, unaffected by inclement weather or minor obstructions like wires or branches. The Laser Range Finder offers eight distinct operating modes:

Ranging Mode: This is the core function, allowing measurement of distances to objects from 5m up to 1000m. Users aim the device at a target and press the OPEN button to display the distance. The unit of measurement can be toggled between Metres (M) and Yards (Y) by holding down the MODE button.
Scanning Mode: An extension of the Ranging Mode, this feature allows continuous measurement of distances to multiple landmarks or moving targets by gradually sweeping the device. It eliminates the need to trigger each target individually, providing real-time distance updates on the display. Each scanning cycle lasts a maximum of 30 seconds before returning to Ranging Mode.
Flagpole Locking Mode: This advanced mode is particularly useful for golfers, as it allows the device to measure distances to closer targets (like a flagpole) without picking up background targets with stronger reflective signals. When multiple objects are acquired, only the distance to the closest object is displayed. A solid dotted box around the flagpole flag indicates a successful lock.
Slope and Angle Measurement Mode: This premium feature is beneficial for outdoor enthusiasts and golfers. It measures slope distance and inclined or declined angles, helping users read terrain better and make informed decisions. For uphill shots, it reflects the need for a longer travel distance, and for downhill shots, a shorter one. The device displays both slope distance and angle, switching between the two values.
Fog Mode: Designed for wet weather conditions, this mode helps screen out false readings caused by raindrops or other atmospheric interference that can refract laser emissions. It provides accurate ranges in foggy or rainy environments. Fog Mode is a standalone mode and cannot be combined with other modes.
Horizontal Distance Mode: This mode provides the true horizontal distance to a target, accounting for any angle. It's particularly useful when the target is higher or lower than the user, or when direct horizontal targeting is obstructed by elements like walls, hedges, or people. The device measures linear distance and slope angle, then calculates and displays the true horizontal distance.
Altitude Difference Measurement Mode (Vertical Height Measurement Mode): This mode allows measurement of the vertical distance (height) between the top and bottom of an object, or between a base and a point above it. The Laser Range Finder measures the distance to both the bottom and top of the object, and based on the angle between these two points, calculates and displays the altitude difference or vertical height.
Speed Mode: This mode enables the Laser Range Finder to measure the speed of moving objects within its sight. Users aim the device at a moving object, and once the crosshairs lock, the speed is displayed. The unit of measurement can be toggled between Kilometres per Hour (KM/H) and Miles per Hour (M/H).

The device automatically selects the last mode chosen by the user before shutdown and will automatically shut down if not used within 15 seconds to conserve battery.

Important Technical Specifications:

Model: EA2258
Measure Distance: 5m up to 1000m
Ranging Accuracy: ±1m / ±1%
Available Objective Diameter: 25mm
Height Measurement Mode: 2-point measurement
Angle Measurement Range: <±90°
Angle Accuracy: ±1°
Optical Coatings: Fully multi-coated
Out Pupil Diameter: 3.8 ±1
Outlet Pupil Distance: 12mm ±1
Power Rating: 3V, 50W
Battery Type: CR2 (3V) Lithium Battery
Dimensions: 112.8 x 79.1 x 39.1mm
Net Weight: 207g (excluding accessories)
Version No: 1.10
Issue Date: 18 February 2022
Laser Product Class: Class 1 Laser Product (EN 60825-1:2014)
Testing Standards: IEC 61010-1, AS/NZS IEC 60825.1

Usage Features:

Eyepiece Adjustment: The eyepiece can be rotated to adjust focus for clear vision of the object and display markings.
Unit Switching: The unit of distance measurement (Metres/Yards) and speed measurement (KM/H/M/H) can be changed by holding down the MODE button.
Low Battery Indicator: A symbol on the display indicates when the battery is low and needs replacement.
Wrist Strap: A wrist strap is provided to prevent accidental drops and damage.
Automatic Shutdown: The device automatically powers off after 15 seconds of inactivity to save battery.
Last Mode Memory: The Laser Range Finder powers on in the last mode used before shutdown.

Maintenance Features:

Storage: When not in use, it is recommended to store the Laser Range Finder in its supplied pouch and carton in a cool, dry, and ventilated location, out of direct sunlight and reach of children. Heavy objects should not be placed on top of it.
Battery Removal: The battery should be removed if the device will not be used for an extended period.
Cleaning:
- Regular "dusting" with the supplied cleaning cloth or a standard duster is recommended for general cleanliness.
- For exterior soiling, wipe with a slightly damp cloth and then polish with a soft dry cloth.
- For optical components (laser emitting lens, laser receiving lens, and eyepiece), use only the supplied cleaning cloth. Avoid applying excessive pressure to prevent damage.
- For stubborn fingerprints or organic materials on the lenses, a solution of 3 parts distilled water to 1 part isopropyl alcohol can be applied with soft, white facial tissues using short, gentle strokes. Change tissues frequently.
- Important Cleaning Restrictions: Do not use detergents, abrasive cleaners, scented or lotioned tissues, or immerse the device in water or any other liquids. Do not use eyeglass cleaning cloths as they may damage lens coatings. Never attempt to clean the Laser Range Finder by immersing it in water or using a steam cleaner.
No Disassembly: Users are warned against taking the Laser Range Finder apart for cleaning, as this will void the warranty.

The Signify Laser Range Finder is a reliable and feature-rich device designed for accurate and convenient distance and other measurements, backed by comprehensive safety guidelines and maintenance recommendations to ensure years of service.

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