1. Introduction
The Hikmicro Owl Pro OH35 is a high-performance portable thermal monocular designed for clear observation in various environments, including complete darkness. Equipped with a sensitive infrared detector and a high-resolution OLED display, this device is ideal for a wide range of activities such as surveillance patrols, search and rescue operations, hiking, and travel. It offers advanced features including highest temperature target tracking, distance measurement, and Wi-Fi hotspot functionality for enhanced usability.
2. Product Overview
The Hikmicro Owl Pro OH35 thermal monocular integrates advanced thermal imaging technology into a compact and ergonomic design. Key components include the objective lens, eyepiece with diopter adjustment, control buttons, and a USB-C port for charging and data transfer.

Figure 1: Hikmicro Owl Pro OH35 Thermal Monocular. An image showing the Hikmicro Owl Pro OH35 thermal monocular from a slightly elevated angle. The device is black and grey, with control buttons visible on the top surface. The eyepiece is on the left, and the objective lens is on the right.
Key Features:
- High-sensitivity thermal module with 384 × 288 pixel resolution.
- 1024 × 768 pixel OLED display for clear viewing.
- Supports observation, highest temperature target tracking, and distance measurement.
- Integrated Wi-Fi hotspot for connectivity.
- Robust design suitable for various outdoor activities.
3. Setup
3.1. Charging the Device
Before initial use, fully charge the device's internal battery.
- Locate the USB-C port on the device.
- Connect the provided USB-C cable to the device and a compatible power adapter (not included) or a computer's USB port.
- The charging indicator will illuminate, typically red during charging and green when fully charged.
3.2. Powering On/Off
- To Power On: Press and hold the Power button (usually marked with a circle and vertical line) for a few seconds until the display illuminates.
- To Power Off: Press and hold the Power button again until the display turns off.
3.3. Diopter Adjustment
Adjust the diopter to achieve a sharp image in the eyepiece for your vision.
- Look through the eyepiece.
- Rotate the diopter adjustment ring (located near the eyepiece) until the on-screen display text and icons appear sharp and clear.
3.4. Objective Lens Focus
For optimal image clarity of distant objects, adjust the objective lens focus.
- Point the monocular at an object at your desired observation distance.
- Rotate the objective lens focus ring (located at the front of the device) until the thermal image of the object appears sharp.
4. Operating Instructions
4.1. Basic Observation
Once powered on and focused, the device will display a thermal image.
4.2. Menu Navigation and Palettes
Use the control buttons to navigate the menu and select different thermal palettes.
- Press the Menu button (often labeled 'M' or with a list icon) to access the main menu.
- Use the Up/Down buttons (or similar navigation buttons) to scroll through menu options.
- Press the OK/Select button (often labeled 'OK' or 'MOD') to confirm a selection.
- Common thermal palettes include:
- White Hot: Hot objects appear white.
- Black Hot: Hot objects appear black.
- Red Hot: Hot objects appear red.
- Fusion: Displays different colors for different temperature ranges.
4.3. Digital Zoom
The device supports digital zoom to magnify the image.
- Typically, a dedicated Zoom button or a combination of navigation buttons can activate and adjust digital zoom levels. Refer to the on-screen interface for specific controls.
4.4. Distance Measurement
The monocular can estimate the distance to an object based on its known height.
- Enter the distance measurement mode via the menu.
- Select a target type (e.g., deer, human) or manually input the target's height.
- Align the top and bottom markers with the target in the display.
- The estimated distance will be displayed on the screen.
4.5. Wi-Fi Hotspot
Activate the Wi-Fi hotspot to connect your smartphone or tablet using the Hikmicro Sight app.
- Enable the Wi-Fi hotspot feature from the device's menu.
- On your mobile device, search for the Hikmicro Wi-Fi network and connect using the provided password (usually found in the device's Wi-Fi settings or manual).
- Use the Hikmicro Sight app for live view, remote control, and media management.
5. Maintenance
5.1. Cleaning
- Device Body: Wipe with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Lens: Use a soft lens brush to remove dust, then gently clean with a lens cleaning cloth and lens cleaning solution. Avoid touching the lens surface with bare fingers.
5.2. Storage
- Store the device in a cool, dry place, away from direct sunlight and extreme temperatures.
- If storing for an extended period, ensure the battery is partially charged (around 50%) and recharge it every few months to maintain battery health.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low or depleted battery. | Charge the device fully. |
| Image is blurry or out of focus. | Diopter or objective lens not adjusted. | Adjust the diopter for your eye and the objective lens for the target distance. |
| No thermal image or distorted image. | Lens is dirty or obstructed. | Clean the objective lens carefully. |
| Wi-Fi connection issues. | Wi-Fi hotspot not enabled or incorrect password. | Ensure Wi-Fi hotspot is enabled on the device and verify the password. Restart both devices. |
If problems persist, please contact Hikmicro customer support.
7. Specifications
| Feature | Detail |
|---|---|
| Model | Hikmicro Owl Pro OH35 |
| Infrared Detector Resolution | 384 × 288 pixels |
| Display Resolution | 1024 × 768 pixels OLED |
| Objective Lens Diameter | 35 mm (based on model name OH35) |
| Color | Black, Grey |
| Weight | 460 Grams |
| Night Vision Capability | Yes (Thermal Imaging) |
| Key Functions | Observation, Highest Temperature Target Tracking, Distance Measurement, Wi-Fi Hotspot |
| Manufacturer Reference | 2009420-99 |
| ASIN | B095CKBBKQ |
8. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official Hikmicro website or contact your authorized dealer. Keep your purchase receipt as proof of purchase.