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AGM ASP TM35-640

Archive - Thermal Monoculars

PART #3093551006AS31

1 reviews | Write a review

Description And features

The Asp handheld observational thermal monocular is equipped with a 640×512 infrared detector and a 1024×768 OLED display. It supports functions of observation, hot spot tracking, distance measurement, Wi-Fi hotspot, and so on. The high-sensitivity built-in thermal detector provides you with clear view even in total darkness. The monocular is mainly applied to scenarios such as patrolling, law enforcement, searching and rescuing, drug enforcement, anti-smuggling, criminal seizing, hiking, travel, and hunting, etc.

AGM ASP TM35-640 Handheld Thermal Monocular Review

Warning: California's Proposition 65


Distance Measurement:
The device realizes distance measurement function after marking the top and bottom of target, and input the target height.

Hot Spot Mark:
The device detects and marks the hot spot of highest temperature.

Mode Switch:
Device supports pallet switch and distance measurement.

Built-in memory module supports video recording/snapshot capturing.

Digital Zoom:
Device supports 1×, 2×, 4× and 8x digital zoom.

Wi-Fi Hotspot:
Device can capture snapshots, record videos, and set parameters via APP after being connected to your phone.

Warning: California's Proposition 65

  • 640×512 resolution, high sensitivity detector
  • Adaptive AGC, DDE, 3D DNR
  • 1024×768 resolution 0.39-inch OLED display
  • Built-in memory supports video recording/snapshot capturing
  • Wi-Fi hotspot
  • Built-in rechargeable Li-Ion battery
  • Up to five hours continuous running (with Wi-Fi hotspot function off)
  • 5-Year warranty

Detector type: Vanadium Oxide Uncooled Focal Plane Arrays

Refresh rate: Sensor / OLED 50 Hz

Resolution: 640 × 512

FOV: 17.7° × 14.2°

Package Includes
  • USB Cable
  • Neck Lanyard
  • Protective Bag
  • Operators Manual
  • Lens Tissuel
  • EU Plug
Export Restrictions:

Product shown herein is subject to US export regulations and may require a license prior to export. Any diversion contrary to US Government regulations is prohibited.


USB Type C
Digital Magnification
1.5x - 12x
Detector type
Vanadium Oxide Uncooled Focal Plane Arrays
Response Waveband
8μm to 14μm
FFC (Flat Field Correction)
Auto, Manual, External Correction
Refresh rate
Sensor / OLED 50 Hz
640 × 512
Detector Pitch
(Vehicles: 1.4×4.0m) - 862m/yd (Humans: 1.8×0.5m) - 281m/yd
Detection Range (6' object)
(Vehicles: 1.4×4.0m) - 3452m/yd (Humans: 1.8×0.5m) - 1125m/yd
Identification Range
(Vehicles: 1.4×4.0m) - 431m/yd (Humans: 1.8×0.5m) - 141m/yd
< 35mk (@25°C, F#=1.0)
Lens (focal length)
Field of view (H × X)
17.7° × 14.2°
Digital zoom
1x, 2x, 4x and 8x
0.39-inch, OLED, 1024 × 768
Hot Track
Imaging palettes
Black hot, White hot, Red hot, Fusion
Built-in memory module (16GB)
Record Video
Support on-board video recording
Capture Snapshot
Battery Type
Built-in rechargeable Lithium battery
Yes, Hotspot
CVBS Output
Yes (via USB)
Battery Operating Time
Up to 5 hours continuous running
Battery Capacity Display
Power supply
5V DC/2A, 2W
480 g (16.9 oz)
Working Temperature/ Humidity
-30°C to 55°C (-22°F to 131°F)
Overall Dimensions
202 × 74 × 66 mm (7.9 × 2.9 × 2.6 in)
Protection Level

Firmware update


Please read the instructions below before updating the firmware.

Check current firmware version of your device, for this go to your device’s main menu to option “Info” or “Version” and check what number you have. Compare the number with the latest version of the firmware on the AGM website.

Download the firmware update package to your PC and unzip it.

NOTE: Do not open the DAV or BIN file on your computer as it may corrupt the file.

  1. Connect the thermal device to your PC with USB cable.
  2. Turn on the thermal device.
  3. Disable the Wi-Fi Hotspot function in the device menu if WiFi is enabled.
  4. Open the detected disk (USB drive) in file manager program. Copy the unzipped .dav file and paste it to the root directory of the device.
  5. Turn off the device.
  6. Turn on the device. After a while, the firmware update process will start automatically. During the update, the screen will display the inscription "Upgrading ...". The update process will be completed when the inscription "Upgrading ..." goes out. Repeat steps 4-6 for each updating file.
  7. Turn off the device and disconnect it from your PC.

If your device does not have a built-in rechargeable battery and is powered by replaceable Lithium batteries, remove the batteries from the battery compartment before connecting the device to your PC, or it may cause computer damage.

If you removed the batteries, please make sure the device is connected to the computer during the update process. Otherwise, the device will shut off and may cause unnecessary upgrade failure, firmware damage, etc.

Please check the latest firmware. Click the FW Version to download the firmware update package.


    Firmware Versions:

    • V5.5.53_230113

      Fixed the following defect: 

      -Device screen may goes solid and button functionality can't work by accident.

    • V5.5.41_220713

      Release Notes:

      - Digital zoom display (1.5X - 3X - 6X - 12X)

    • V5.5.38_220322

      - Repacked firmware. All the features keep the same.

      - FPGA FW integrated into Main FW

    • V5.5.37_220112

      - Support "Auto Power Off."

      - Support "Time Sync."

      - Support "Burn-Prevention."

    • V5.4.24_210927

      - Repacked firmware. All the features keep the same.

    • V5.4.24_200808

      - Basic version.

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