1. Introduction
Thank you for choosing the Newcon Optik LRM 2200SI 7x25 Rangefinder Monocular. This device is designed for precise distance measurement and observation, offering 7x magnification and a 25mm objective lens. Please read this manual carefully before operating the device to ensure proper use and to maximize its lifespan.
Safety Information
- Do not look directly at the sun or any bright light source through the monocular, as this can cause permanent eye damage.
- Keep the device away from extreme temperatures, humidity, and direct sunlight.
- Avoid dropping or subjecting the device to severe impacts.
- Do not attempt to disassemble or repair the device yourself. Refer to qualified service personnel.
2. Setup
2.1 Battery Installation
The LRM 2200SI requires batteries for operation. Locate the battery compartment, typically on the underside or side of the device. Insert the required batteries, ensuring correct polarity as indicated inside the compartment. Close the compartment securely.
2.2 Initial Inspection and Focus Adjustment
Before first use, inspect the device for any visible damage. To adjust the focus, look through the eyepiece and rotate the diopter adjustment ring (if present) or the main focus ring until the image appears clear and sharp.

Figure 1: Newcon Optik LRM 2200SI 7x25 Rangefinder Monocular. This image shows the grey monocular with its two front lenses, the eyepiece on the right, and the two control buttons ('MODE' and 'ACTION') on the top surface.
3. Operating Instructions
3.1 Powering On and Off
Press the 'ACTION' button briefly to power on the device. The display inside the viewfinder will illuminate. The device typically powers off automatically after a period of inactivity to conserve battery life.
3.2 Taking a Measurement
- Aim the monocular at the target you wish to measure.
- Press the 'ACTION' button. The device will emit a laser pulse and calculate the distance.
- The measured distance will be displayed in the viewfinder. For stable readings, especially at longer distances (e.g., beyond 1800 meters), using a tripod is recommended to minimize hand shake.
3.3 Changing Measurement Modes
Press the 'MODE' button to cycle through available measurement modes. These may include standard distance, scan mode, or other specialized functions depending on the specific firmware version. Refer to the on-screen indicators for the active mode.
3.4 Understanding the Display
The LRM 2200SI displays measurement readings directly within the monocular's viewfinder. The numbers are typically black. In low-light conditions, reading the display may be challenging due to the lack of internal illumination. Plan your usage accordingly or use an external light source if necessary for night operation.
4. Maintenance
4.1 Cleaning the Lenses
Use a soft, lint-free cloth specifically designed for optical lenses to clean the objective and eyepiece lenses. Gently wipe away dust or smudges. For stubborn marks, a small amount of lens cleaning fluid can be applied to the cloth, not directly to the lens.
4.2 Cleaning the Body
Wipe the body of the monocular with a soft, damp cloth. Do not use abrasive cleaners or solvents, as these can damage the rubberized coating or finish.
4.3 Storage
When not in use, store the LRM 2200SI in its protective case in a cool, dry place, away from direct sunlight and extreme temperatures. If storing for extended periods, remove the batteries to prevent leakage.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Dead or incorrectly installed batteries. | Check battery polarity; replace batteries. |
| Cannot get a distance reading. | Target too close/far, obstruction, or unstable aim. | Ensure target is within range; clear line of sight; use a tripod for stability. |
| Display is dim or unreadable at night. | Lack of internal display illumination. | This is a characteristic of the device. Use external light or operate in sufficient ambient light. |
| Image is blurry. | Focus not adjusted. | Adjust the focus ring on the eyepiece until the image is clear. |
6. Specifications
| Feature | Detail |
|---|---|
| Model | LRM 2200SI |
| Magnification | 7x |
| Objective Lens Diameter | 25mm |
| Product Dimensions | 16.76 x 16.51 x 10.41 cm |
| Item Weight | 748 g (1.65 Pounds) |
| International Protection Rating | IP54 |
| Batteries Included? | No |
| UPC | 627973517375 |
| Date First Available | Feb. 11 2016 |
7. Warranty and Support
For information regarding warranty coverage, technical support, or service, please refer to the official Newcon Optik website or contact their customer service department directly. Keep your purchase receipt as proof of purchase for any warranty claims.




