



About This Manual
COPYRIGHT © 2024 ThermTec Technology Co., Ltd. ALL RIGHTS RESERVED.
Any and all information, including, among others, wording, pictures, graphs are the properties of ThermTec Technology Co., Ltd. or its subsidiaries (hereinafter referred to as“ThermTec”). This user manual (hereinafter referred to be “the Manual”) cannot be reproduced, changed, translated, or distributed, partially or wholly, by any means, without the prior written ermission of ThermTec. Unless otherwise stipulated, ThermTec does not make any warranties, guarantees or representations, express or implied, regarding to the Manual.
This Manual is applicable to Thermal Imaging Monocular.
The Manual includes instructions for using and managing the product. Pictures, charts, images, and all other information hereinafter are for description and explanation only. The information contained in the Manual is subject to change, without notice, due to firmware updates or other reasons.
Regulatory Information
These clauses apply only to the products bearing the corresponding mark or information.
This product and – if applicable – the supplied accessories too are marked with “CE” and comply therefore with the applicable harmonized European standards listed under the Directive 2014/53/EU(RED), Directive 2014/30/EU(EMC), Directive 2014/35/EU(LVD), Directive
2011/65/EU(RoHS).
This product and – if applicable – the supplied accessories too are marked with “UKCA” and comply therefore with the following directives: Radio Equipment Regulations 2017, Electromagnetic Compatibility Regulations 2016, Electrical Equipment (Satety) Regulations 2016, the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012.
This product and – if applicable – the supplied accessories too are marked with “RoHS”and comply therefore the requirements of Directive 2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic equipment (“RoHS recast” or “RoHS 2”)
2012/19/EU (WEEE directive): Products marked with this symbol cannot be disposed of as unsorted municipal waste in the European Union. For proper recycling, return this product to your local supplier upon the purchase of equivalent new equipment, or dispose of it at designated collection points. For more information see: www.recyclethis.info.
Directive 2006/66/EC and its amendment 2013/56/EU (Battery Directive): This product contains a battery that cannot be disposed of as unsorted municipal waste in the European Union. See the product documentation for specific battery information. The battery is marked with this symbol, which may include lettering to indicate cadmium (Cd), lead (Pb), or mercury (Hg). For proper recycling, return the battery to your supplier or to a designated collection point. For more information see:www.recyclethis.info.
1. Introduction
1.1 Device Description
ThermTec Cyclops-SE Series Thermal Imaging Monocular, a next-generation intelligent thermal imaging device, features a 12μm uncooled infrared detector, a 35mm objective lens, and a 1024×768 OLED high-definition display. With its AI image recognition algorithm, it delivers clear views in various lighting conditions, including complete darkness, ensuring reliable, high-quality visuals for nighttime activities. Additionally, its seamless mobile phone connectivity enables real-time view sharing.
1.2 Features
- Mechanical Joystick Design
It balances the central of gravity, providing an easier and outstanding handheld experience. - 12μm VOx Detector
The 12μm VOx detector provides images with better quality, and ensures perfect detail recognition. - OLED Display
Designed with 1024×768 OLED display, it brings outstanding HD image quality as well as great durability, making it operable in a broader temperature range as low as minus 20℃. - AI Intelligent Ranging
Based on the deep learning algorithm, the monocular can automatically measure the object distance in the various objects. - Photo and Video Playback
Integrated pictures and video recording makes sharing the thermal action quick and easy, with the functions of playback and APP sharing. - Long Battery Life
Built-in battery with up to 16H super long standby, recording every and instant moment of your hunting and outdoor experience. - Continuous Zooming
Continuous 1.0-4.0 HD zooming ensures excellent sharpness and the highest resolution of details from minimum to maximum magnification. - IP67 Protection Design
1.3 Detection Range

1.4 Application Scenarios
- Animal Observation
- Outdoor Adventure
- Security Law Enforcement
- Emergency Search and Rescue
1.5 Cautions
CAUTION

Avoid hard objects.

Do not aim the lens directly at the sun or high-temperature light sources.

Do not use the device in extremely cold or hot environment.

Charge the battery once every three months when it is not used for a long period of time.

Make sure the USB cover is tightly closed when used in water environment.

Do not irradiate the laser indicator of the device to human eyes.

Do not disassemble or modify the device by yourself in any way.
2 Packing List

3 Operation Guide
3.1 Battery Charging
The battery should be fully charged prior to use. Note: The battery is not user replaceable. Follow the below steps to charge the battery.
- Lift the cover from the USB port.
- Plug the cable provided into the USB port.
- Plug the opposite end of the cable into a USB power source.

Notes: When the charging indicator on the device becomes red, it means you need to charge the device immediately. The indicator turns to red when it is charging and turns to green when it finishes charging. After it turns to green, stop charging.
3.2 Power on/off

Power on
Hold the POWER button for four seconds and the boost screen will be shown.
Power of
When the device is turned on, hold the POWER button for four seconds to power off
the device.
Note: Refer to Figure 1 for the main view of the monocular.
3.3 Buttons and Controls
3.3.1 Button Features and Introduction

Before entering the main menu
Long press | Short press | Double-Click | |
![]() | Power on/of | Standby mode on/of | N/A |
![]() | Take videos | Take photos | N/A |
![]() | Up | Down | Left | Right | Center |
Zoom in | Zoom out | AI Ranging | Short push Peseudo switch Long push Outline mode | Brief press Calibration Double press Main menu |
After entering the main menu
![]() | Up | Down | Short ress | Long Press | Double press |
Move up | Move down | Confirmation | Exit | N/A |
3.3.2. Lens Adjustment
Diopter Adjustment
Looking through the eyepiece, adjust the position of diopter level to optimize the image sharpness on the OLED display.

Objective Lens Focusing
Manually adjust the objective lens focus when necessary.

3.3.3 Joystick Operation
3.3.3.1 Zoom

3.3.3.2 Pseudo Color Switch
Use joystick towards right to switch pseudo color.

There are six color palettes by default. You can choose the pseudo color you want by customizing. Unwanted colors can be turned off in the system setting.

Color Palettes

3.3.3.3 Target Outline Function
Long press the joystick towards right to activate theb Target Outline Mode. You can clearly observe the outline of your targets in darkness, and it will help to reduce the strong light contrast to your eyes. Long press the joystick towards right for one more time to exit the Outline Mode.

3.3.3.4 AI Ranging
Use the joystick towards left to enable or disable AI ranging function (before this function is enabled, please make sure the device is in AI ranging mode. Otherwise, refer to Section 3.4 for setting).


3.3.3.4.1 Turning on AI Ranging Function
Double click the joystick to enter the main menu, and check whether the AI ranging function is enabled (this function is enabled by default). If not, press to enter the System Setting menu, and press Ranging and AI to turn on this function.
Short press the joystick to left to turn on AI Ranging function, and the corresponding icon will turn to blue at the upper right corner. Notes: There are six types of objects to be selected for AI
measurement in total. If the AI ranging function is not enabled by user before using this device, this funtion will not be working properly. the upper right corner
3.3.3.4.2 Unselecting the Type of Objects
Move the cursor and short press the joystick one time to unselect the type of object that is not your target object in the submenu. The icon of the unselected type of object will turn to white, as shown in the below figure. The distance of unselected type of object will not be shown on your device.

3.3.3.4.3 Accurate Distance Measurement
Move the cursor to select the type of object that is your target object in the submenu.
Short press the joystick one time to save your selection. The height of the selected type of object can also be set by the user. Press the joystick to the left to exit the current menu. Notes: The actual height of the types of objects should be consistent with the set parameters for accurate distance measurement.
3.3.4 Capture/Record
Press to take photos. Then the photo icon in the upper left corner will flash once. Press and hold
to take videos. Then the recording icon in the upper left corner starts flashing, and the recording starts timing. Press and hold again to stop.
3.4 Settings
Double-click the joystick to enter Setting menu. Note: Select by moving the joystick, and short
press the joystick to confirm the selectio.
3.4.1 Image Setting
Press to enter the Imaging Setting menu. There are five sub-menus for image setting, which are “Image Mode”, “Sharpness”, “Denoise”, “Brightness” and “Contrast”.

Image Setting | ||
Mode | Object mode. Forest mode | Especially enhance targets detail. Its recommended to be used in bad weather conditions. Obtaining both background and targets detail simultaneously. |
Sharpness | 0-10 | Adjust image sharpness to make the image edge sharper. The recommended value is 5. |
Denoise | 0-10 | Adjust image noise to make the image cleaner. The recommended value is 5 |
Brightness | 1-10 | Adjust image brightness to make the image brighter. The recommended value is |
Contrast | 1-10 | Adjust image contrast to make the target more prominent in the image. The recommended value is 5. |
3.4.2 System Settin
Press to enter the System Setting menu. Select by moving the joystick, and short-press the joystick to confirm the selection.

System Setting | ||
EIS | Electronic Image tabilization. Can be turned on/off in the system setting | |
Ranging | AI MIL | AI distance measurement MIL distance measurement |
PIP | Picture-inpicture | In the picture, the image is 2x enlarged from the center of the cross. |
X-Y | The position of the crosshair in the picture can be adjusted and separately saved. | |
Reticle | 0-8 | Choose the style of the crosshair. “0” represents none, and “1-8” represents seven different styles |
OLED | Hue | Blue, purple and gray are optional for OLED hue. |
Correction | Manual/ Auto | The mask works to calibrate the uniformity of images. |
System | ||
Shutdown | Setting off time | |
Logo | Logo watermark at picture or video | |
Reset | All configuration arameters are restored to the factory default values after esetting | |
Update | You can adjust and upgrade the device system. | |
Language | Support multiple languages | |
Time zone | Select local time zone and adjust the date and time. | |
Blind pixel | The blind pixel in the icture can be replaced. | |
Tracking | Turn on heat tracking to mark the target with the highest temperature in real time in the screen. | |
OSD | Turn off OSD. | |
LED | Turn off LED. The work indicator is turned off and the hidden work mode is started. |
EIS function: Turn on the EIS function to reduce the impact of body shaking on the image and keep the image stable when observing distant targets.

3.4.3 Date & Time Setting
Double press the joystick and press to enter the System submenu, and press Time and Date to set the time (hour and minute) and date (year, month and day) respectively, as shown in the below figures.


Notes: The date will be displayed on the screen only when entering the Stand-by Mode.
3.4.4 Network Connection
Press to enter the Network Connection menu

3.4.4.1 APP Download
Search “ThermTec Outdoor” in APP store, or scan the below QR code to download the APP

3.4.4.2 Connect via Hotspot
- Turn on devices hotspot

- Connect mobile client with devices hotspot

- After the connection, you could control devices freely with APP (ThermTec Outdoor).
3.4.5 File Management
Short-press to enter the File Management menu. Select the image and video sub-menus to view the images and videos and play the videos.

File Setting | |
Image | Access the Image sub-menu, and select photo files through the joystick for management. |
Video | Access the Video sub-menu, and select video files through the joystick for management. |
3.6 System Software Upgrade
Cyclops-SE series thermal imaging monocular supports “ThermTec Outdoor” APP, which allows you to transmit the image from the thermal imager to the smartphone or tablet via Hotspot in real time mode.
3.6.1 Upgrading via APP
- Open ThermTec Outdoor APP
- Turn on the hotspot of the device, and connect it with the Mobile phone.
- Select Update on the menu options. The downloading and upgradation would be a continuous process if there is an update.
- After finishing the update, the device will reboot.
3.6.2 Upgrading via PC
- Please download the corresponding upgrade package from the official website, www.thermeyetec.com. Connect the device to your PC via a Type-C data cable.

- Copy the related updating firmware to the storage file of Cyclops-SE. Press joystick to select Update icon, and the system will prompt “Update”

- Enter version to check firmware version
4 Technical Data
4.1 Dimensions

4.2 Dimensions
Model | Cyclops335SE |
Sensor | Microbolometer |
Resolution | 384×288 |
Pixel Pitch | 12µm |
NETD | 20mK@300k |
Spectral range | 8-14µm |
Frame rate | 50HZ |
Detection Range | 1800m |
Optics | |
Objective lens | 35mm/F1.0 |
Field of view | 7.5°x5.6° |
/m@100m | 13.2mx9.9m |
Magnification | 3.3x |
Digital Zoom | 1-4x continuous zoom |
Eye relief | 40mm |
Exit pupil | 6mm |
Diopter | ±5D |
Display | |
Type | ANOLED |
Resolution | 1024×768 |
Display size | 0.39 inch |
Color palette | 6 |
Image mode | Forest/Target/Outline |
Function | |
Photo/video playback | Yes |
Language | Multiple-languages |
Inbuilt Memory | 64GB |
Calibration | Auto/Manual |
PIP | Yes |
AI/MIL Distance Measurement | Yes |
Heat Track | Yes |
Real-time Notification | Yes |
OSD Recording | Yes |
Battery | |
Internal battery | Internal High Capacity Li-ion Battery (18650×2) |
Battery life | 16h |
Interface | |
Type-C | Supports battery charging, data transfer |
Hotspot | App remote control |
Environment | |
Working temperature | -20℃—+50℃ |
Protection Level | IP67 |
Weight, g | 522 |
Dimension mm | 196.4*63.8*64.1 |
Accessories | |
External Cable | USB Cable |
Other Accessories | Non-dust cloth and etc. |