Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular, 384x288, Black, TD421LRF

Questions & Answers

Can it be tripod mounted Expert Answer

Yes, the Guide Sensmart TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular features 3/8-16 threads located on the underbody that can be used to mount the monocular to a tripod.

by Ethan, Gear Expert, April 24, 2024

Can it be used during the day? Can you answer this question?

View All Q&A You Have a Question? Ask!

Customer Reviews

Most Recent Reviews

Compact, Capable, and Surprisingly Feature-Rich by martinweber1235, June 20, 2025

This has quickly become a favorite in my gear lineup. For an inexpensive thermal monocular, it packs a serious punch. The resolution and the display deliver crisp, high-contrast thermal images that make spotting wildlife in low light a breeze. The bu...
Read More...

Read 1 Review

Product Discontinued by Manufacturer

Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular has been discontinued by Guide USA and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Thermal Imaging, Thermal Imaging Monoculars yourself to try and find the perfect replacement for you!

Compare

Add to Wishlist

Product Info for Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular

The TD421 Gen2 LRF Series is the industry's first entry-level full-featured handheld thermal imaging monoculars. While inheriting the characteristics of the previous generation, such as being lightweight, portable, easy to operate, and durable, it integrates a high-precision laser rangefinder module to accurately detect targets within 660 yards. It adopts an OLED display, providing clear imaging and a comfortable viewing experience, making it the ideal equipment for outdoor night vision.

Features of Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular

Portable
Light-Weight
2 Seconds Boot-Up
Image Details Upgrade
10 Hours Working Time
Built-In Laser Range Finder

Package Contents:

Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular
18650 Battery
18650 Battery Charger
Usb Type-C Cable
Carrying Bag
Eyeshade
Wrist Strap

Thermal Monocular Mounts

1–26 / 26

MDT JAE Night Vision Mount, Black, 105514-BLK

$229.95

Precision Reflex M69-AN-PVS 14 Mount, Black, 04-PVS-14

List: $271.50 (Save 12%)

$238.00

Clearance

Armasight Scope Mounting System for Clip-On Day/Night System

Pulsar Locking QD mount for Pulsar Apex, Trail, Digisight, Talion, and Core Rifle Scopes, Black, PL34000

(14)

List: $119.99 (Save 17%)

$99.97

ATN Piccatinny Weapon Mount Adapter for NVM14

(2)

$115.49

Free 2 Day Shipping

ATN TICO Scope Mounting System

(2)

As Low As (Save Up to $18.00)

$179.00

See all 3 models

AGM Global Vision PVS-14 Weapon Mount, Black, 4.3x2x0.5, 6107WMP1

List: $65.00 (Save $1.01)

$63.99

On Sale

GG&G Quick Detach Multi-Flex Night Vision Monocular Mounts

(3)

As Low As (Save Up to 24%)

$43.99

See all 7 models

Unity Tactical REKE

List: $376.00 (Save $34.00)

$342.00

See all 6 models

Blazin' Deal

Samson Quick Flip PVS14/Magnifier Interlocking Mount

(1)

As Low As (Save Up to 63%)

$134.49

See all 2 models

Free 2 Day Shipping

Armasight AIM PRO - Advance Integrated Mount Pro, Black, ANKI000032

(4)

List: $549.00 (Save 78%)

$119.00

Final Sale

USED, American Defense Manufacturing Armasight #28 Mount, Titanium Lever, Black, AD-2107-TL

List: $199.24 (Save 28%)

$143.99

ATN Weapons Mount for ATN 6015 & PVS14 Night Vision Monoculars ACMPPVSXPCWM

(2)

$145.99

Samson PVS-14 Quick Release Flip-to-Side Mount, Black, 03-00111-01

List: $374.00 (Save $19.00)

$355.00

EOTech MonoNV Flip Weapon Mount, Black, 123-045-1

List: $219.99 (Save $4.00)

$215.99

Samson QR Thermal Flip-to-Side L3 CNVD-T, Black, QR-CNVD-T

List: $187.00 (Save $9.00)

$178.00

SiOnyx Picatinny Rail Mount for Aurora Digital Night Vision Monoculars, Black, A011100

(3)

List: $89.00 (Save 45%)

$49.00

NightSnipe Sightmark Wraith Bolt Action/ AR Extension Mount, NSWRAITH- EXT -5864

List: $79.99 (Save 38%)

$49.99

ITT Small Arms Weapon Mount for PVS-14A/6015 000447

List: $155.99 (Save 28%)

$111.99

Samson N/SEAS Night Vision Quick Flip Scope Mount, SC-N-SEAS

List: $355.00 (Save $18.00)

$337.00

GG&G Twist Lock Base Mounting Ring for Aimpoint PVS-14 Nightvision Device GGG-1340

(2)

List: $81.99 (Save $2.00)

$79.99

Precision Reflex M69-AN-PVS, 18 Mount, Black, 04-PVS-18

List: $315.00 (Save 16%)

$265.00

Samson NVM-14 Quick Release Flip-to-Side Mount, Black, QR-MVM14

List: $384.00 (Save $19.00)

$365.00

Samson NVM-14 Screw-on Flip-to-Side Mount, Black, SC-MVM14

List: $349.00 (Save $17.00)

$332.00

Samson PVS-14 Screw-on Flip-to-Side Mount, Black, SC-PVS14

List: $339.00 (Save $17.00)

$322.00

Samson PVS-14 & EOTech G32 Screw-on Flip-to-Side Mount, Black, SC-PVS14-EO

List: $355.00 (Save $18.00)

$337.00

Batteries

1–20 / 20

DNT Optics 18650 Flat Top Batteries w/ Charger, 2, P-18650-CH

List: $54.99 (Save 18%)

$44.99

Nitecore NL1840HP 4000mAh Rechargeable 18650 Battery, Black/Yellow, 6952506496402

(3)

List: $32.81 (Save 27%)

$23.95

SureFire Micro USB Lithium Ion Protected 18650 Battery

(15)

List: $41.99 (Save 14%)

$35.99

See all 1 models

Best Rated

PARD Optics 18650 Replacement Battery, Black, 18650 battery

(5)

List: $26.99 (Save 44%)

$15.00

Nitecore NL1836R 3600mAh USB-C Rechargeable 18650 Battery, Yellow, BAT-NITE-18650-NL1836R

(3)

List: $36.03 (Save 39%)

$21.95

Final Sale

Olight Customized 3500mAh 18650 - High Capacity Protected Rechargeable Battery

(1)

As Low As (Save Up to 22%)

$19.99

See all 2 models

Nitecore NL1836HP 3600mAh Rechargeable 18650 Battery, Yellow, BAT-NITE-18650-NL1836HP

(1)

List: $28.80 (Save 20%)

$22.95

DNT Optics 18650 - Battery, 18650B

List: $17.99 (Save 44%)

$9.99

Nitecore NL1823 2300mAh Rechargeable 18650 Battery, Yellow, 6952506491476

(1)

List: $18.20 (Save 40%)

$10.99

HRT Tactical Gear USB 18650 Rechargeable Batteries - 2 Pack, HRT-18650C-12-AA

(1)

List: $60.86 (Save 43%)

$34.95

Nitecore NL1834 3400mAh Rechargeable 18650 Battery, Yellow, 6952506491506

List: $21.54 (Save 17%)

$17.95

Nextorch 18650 USB-C Direct Recharge Battery, Black, BW20029

List: $23.99 (Save 27%)

$17.49

AGM Global Vision AGM Rechargeable Battery, 18650, 63081860

List: $32.77 (Save 41%)

$19.39

Nitecore NL1832 18650 Battery - 3200mAh, Yellow, NL1832

List: $25.95 (Save $1.96)

$23.99

Atibal Illumination 18650 USB Rechargeable Batteries, 1 Pair, Black, Ai-650B-USB

List: $49.99 (Save 36%)

$31.99

Nitecore IMR18650 for TM28, Concept 1. 3100mAH, Protected, Yellow, 6952506492220

List: $33.99 (Save $2.00)

$31.99

Streamlight USB HAZ-LO LED Headlamp Battery, Li-Ion, 61461

List: $43.99 (Save $2.00)

$41.99

Fenix 18650 Rechargeable Battery, 3000mAh, ARB-L18-3000P

List: $43.22 (Save 21%)

$33.99

ASP USB-C Battery & Link Case, 18650, 53057

List: $32.00

$31.99

Nextorch 18650 Usb Type C Battery, Black, DC20030

List: $18.99 (Save 11%)

$16.99

Thermal Monocular Accessories

1–30 / 30

Free 2 Day Shipping

Armasight by Rayvn Group Modular Bridge Mount, Rail System w/2 Pods

(5)

$399.00

InfiTac Fast Mini Protective Cover

(2)

List: $33.99 (Save 25%)

$25.49

Free 2 Day Shipping

Armasight G95 Mount Designed & Manufactured by Wilcox Industries

(1)

List: $679.00 (Save $30.00)

$649.00

Free 2 Day Shipping

Wilcox Trijicon SkeetIR Flip Mount w/Lanyard

(1)

List: $572.18 (Save $28.61)

$543.57

Blazin' Deal

6 models

Wilcox G24 Mount w/ Low Profile Breakaway Base

(23)

As Low As (Save Up to 15%)

$459.99

Free 2 Day Shipping

AGM Global Vision Rattler-C V2 Eyepiece

List: $215.00 (Save $20.00)

$195.00

Free 2 Day Shipping

AGM Global Vision Dovetail Helmet Mount for Shroud

(2)

List: $325.00 (Save $30.00)

$295.00

Final Sale

12 models

AGM Global Vision Front Q-R Adapter for Rattler-C V2/Secutor LRF-C

(4)

As Low As (Save Up to 11%)

$195.00

Free 2 Day Shipping

2 models

Wilcox G24 Night Vision Mount w/Hybrid Shroud

(16)

List: $767.86 (Save $38.39)

$729.47

Best Rated

iRayUSA ADM Rico Micro MQD Mount

(7)

List: $218.90 (Save $19.90)

$199.00

Best Rated

Wilcox AN/PVS-14 Arm Mount with NVG Interface Shoe

(7)

List: $268.52 (Save $12.53)

$255.99

AGM Global Vision Low Base Single Lever QR Mount

(4)

List: $215.00 (Save 28%)

$153.99

Free 2 Day Shipping

4 models

Wilcox G24 Night Vision Goggle Mount

(2)

As Low As (Save Up to $37.53)

$669.67

Guide USA Bell mount adapter for Clip-On Guide TB

List: $160.00 (Save $15.00)

$145.00

Wilcox FLIR Recon M24 Helmet Mount Adapter

List: $498.35 (Save $24.92)

$473.43

10% Bonus Bucks

American Defense Manufacturing Armasight #27 Base, Titanium Lever

List: $120.75 (Save $6.04)

$114.71

Blazin' Deal

2 models

TRYBE Optics PVS-14/PVS-7 Flip-Up Head Mount Assembly

List: $329.99 (Save 49%)

$169.00

Clearance

2 models

Wilcox G11 Night Vision Goggle Mount

(1)

As Low As (Save Up to 36%)

$333.99

Rusan MCR-M43P Adapter Calonox 2

List: $209.00 (Save 21%)

$165.99

Free 2 Day Shipping

Wilcox PVS-14 Helmet/Weapon Mount Shoe

List: $375.33 (Save $5.34)

$369.99

Final Sale

3 models

Wilcox Three Hole Shrouds with Lanyard and Cup Assembly

As Low As (Save Up to 13%)

$161.99

Final Sale

2 models

Wilcox Trijicon SkeetIR Thermal Interface Shoe

As Low As (Save Up to 11%)

$49.99

2 models

Norotos INVG HYPER Helmet Mount w/ Breakaway, Dovetail

(1)

$544.00

NightRide HDMI Adapter

List: $219.99 (Save 15%)

$185.99

Clearance

Armasight Helmet Mount for Night Vision Multi-Purpose Monoculars

(2)

List: $219.00 (Save 76%)

$52.00

Best Rated

AGM Global Vision Eyepiece for Rattler TC35

(5)

List: $214.00 (Save 21%)

$169.99

Blazin' Deal

2 models

TRYBE Optics PVS-14 Dual Bridge Mounting System

(4)

List: $449.99 (Save 59%)

$185.00

Blazin' Deal

2 models

NiteHog Viper 35 QR Adapter for External Diameter at Objective Scopes

(2)

As Low As (Save Up to 65%)

$58.49

Newly Added

ATN TICO 6 Eyepiece Adapter, Viewer

List: $219.00 (Save $20.00)

$199.00

Newly Added

2 models

Ultimate Night Vision Rico Micro Dovetail Picatinny Shoe

List: $149.00 (Save 13%)

$129.00

Image of Guide USA TE 421 Thermal Monocular

Guide USA TE 421 Thermal Monocular (1) List: $1,090.00 (Save 13%) $949.00

Image of Guide USA TE 211M Thermal Monocular

Guide USA TE 211M Thermal Monocular (1) List: $550.00 (Save $31.00) $519.00

Image of Guide USA TE 211 Thermal Monocular

Guide USA TE 211 Thermal Monocular List: $590.00 (Save 12%) $519.00

Image of Guide USA TU 650 M 3.0 3.7x50mm 30mm Tube Thermal Rifle Scope

Guide USA TU 650 M 3.0 3.7x50mm 30mm Tube Thermal Rifle Scope (1) List: $4,790.00 (Save 10%) $4,299.00

Image of Guide USA Bell mount adapter for Clip-On Guide TB

Guide USA Bell mount adapter for Clip-On Guide TB List: $160.00 (Save $15.00) $145.00

Image of Guide USA QD pica mount for Clip-On TB

2 models Guide USA QD pica mount for Clip-On TB List: $200.00 (Save 21%) $159.00 Final Sale

Image of Guide USA Rusan bell mount adapter for Clip-On Guide TB

Guide USA Rusan bell mount adapter for Clip-On Guide TB List: $180.00 (Save 12%) $159.00

Image of Guide USA TU 635 L 3.0 3x35mm 30mm Tube Thermal Rifle Scope

Guide USA TU 635 L 3.0 3x35mm 30mm Tube Thermal Rifle Scope List: $3,890.00 (Save 10%) $3,499.00

Image of Guide USA TD653 LRF 2.6x50mm 640x512px Thermal Imaging Monoculars

Guide USA TD653 LRF 2.6x50mm 640x512px Thermal Imaging Monoculars List: $2,599.00 (Save $200.00) $2,399.00

Image of Guide USA TU 650 L 3.0 3.9x50mm 30mm Tube Thermal Rifle Scope

Guide USA TU 650 L 3.0 3.9x50mm 30mm Tube Thermal Rifle Scope List: $4,220.00 (Save 10%) $3,799.00

Image of Guide USA NiteHog Thermal QR adater

Guide USA NiteHog Thermal QR adater List: $180.00 (Save 12%) $159.00

Image of Guide USA DN Series DN30 1.9-15.2x30mm Night Vision Binocular

Guide USA DN Series DN30 1.9-15.2x30mm Night Vision Binocular List: $2,380.00 (Save 24%) $1,799.00 Final Sale

Image of Guide USA TN series LRF TN450 3.2-12.8x50mm Thermal Binocular

Guide USA TN series LRF TN450 3.2-12.8x50mm Thermal Binocular List: $3,220.00 (Save 10%) $2,899.00

Image of Guide USA TL Series TL430 2.3-9.2x35mm Fusion Monocular and Range Finder

Guide USA TL Series TL430 2.3-9.2x35mm Fusion Monocular and Range Finder List: $2,450.00 (Save 10%) $2,199.00

Image of Guide USA TN series LRF TN430 2.3-9.2x30mm Thermal Binocular

Guide USA TN series LRF TN430 2.3-9.2x30mm Thermal Binocular List: $2,998.89 (Save 10%) $2,699.00

Image of Guide USA TR Series TR630 2-8x35mm Thermal Rifle Scope

Guide USA TR Series TR630 2-8x35mm Thermal Rifle Scope (1) List: $3,090.00 (Save 19%) $2,499.00

Image of Guide USA TL Series TL450 3.3-13.2x50mm Fusion Monocular and Range Finder

Guide USA TL Series TL450 3.3-13.2x50mm Fusion Monocular and Range Finder (1) List: $2,590.00 (Save $241.00) $2,349.00

Image of Guide USA TU Series TU431 2.6-10.4x35mm Thermal Rifle Scope

Guide USA TU Series TU431 2.6-10.4x35mm Thermal Rifle Scope List: $2,260.00 (Save 16%) $1,899.00

Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular Unavailable & Discontinued Models

List of Unorderable Models

Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular, 384x288, Black, TD421LRF , MPN: TD421LRF , UPC: 6970883550975 , Code: 5VS-HS-TDS421-TD421LRF

Compare (0)

More Deals

Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular TD421LRF

Product Discontinued by Manufacturer

Product Info for Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular

Features of Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular

Package Contents:

Thermal Monocular Mounts

Batteries

Thermal Monocular Accessories

Related Products to Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular

Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular Unavailable & Discontinued Models

List of Unorderable Models

FREE SHIPPING on Over 250,000 Products

Enjoy our FREE RETURNS

More Deals

Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular TD421LRF

Product Discontinued by Manufacturer

Product Info for Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular

Features of Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular

Package Contents:

Thermal Monocular Mounts

Batteries

Thermal Monocular Accessories

Related Products to Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular

Guide USA TD LRF Series TD421 LRF 1.9-7.6x25mm Thermal Monocular Unavailable & Discontinued Models

List of Unorderable Models