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A report says Amansa Investments, SBI Mutual Fund and other investors put ₹413 crore into Tonbo Imaging ahead of its IPO, but the amount and investor-by-investor contributions are not confirmed by the company or the regulatory materials available here. What is documented is that Tonbo’s proposed IPO is an offer for sale of existing shares, not a fresh issue of new shares.
What is known about the reported ₹413 crore investment?
The headline amount of ₹413 crore and the participation attributed to Amansa Investments, SBI Mutual Fund and other investors could not be corroborated in the company material and IPO records cited below. Without a primary transaction announcement or a report that verifies the terms and allocations, treat the figure as reported rather than independently confirmed.
This distinction matters: the IPO filings describe shares being sold by existing shareholders, but do not establish that a separate ₹413 crore investment took place, when it occurred, or how much each named investor contributed.
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Tonbo Imaging India Limited develops and manufactures specialist defence systems. The company says its work spans sensing, processing, communication and guidance systems for surveillance, reconnaissance, targeting and control. Its portfolio includes thermal imaging cores, weapon sights, handheld thermal imaging binoculars, targeting systems, missile seekers, fire-control systems and missile-guidance systems. These are defence products, not ordinary consumer electronics.
#1 Best Overall
- 【Enhanced Thermal Clarity】Start with 128x128 thermal imaging and enhance to 240x240 resolution with TISR technology for greater details. The wide 40°x 30° field of view and a 25Hz refresh rate deliver accurate, smooth thermal images—ideal for detailed inspections in homes and on electrical systems and machinery
- 【Wide Application with Smart Alerts and Photograph】From underfloor heating to leak detection and electrical inspections, the TC004 Mini adapts to every challenge. When temperatures exceed preset levels, an on screen warning alerts you instantly while automatically capturing a photo to streamline your diagnostics. In addition, TC004 Mini also supports manual photo taking to help you record and solve problems, and the built-in 512MB eMMC storage can store up to 8,000 photos
- 【Effortless Temp Measurement with Alerts】Easily measure temperatures between -4°F to 842°F (-20°C to 450°C), with an accuracy error within ±3.6°F/2%, the thermal camera automatically pinpointing the highest, lowest, and central spots. Plus, you can choose from 5 different color palettes - White Hot, Black Hot, Iron, Rainbow, and Red Hot - to meet your specific work needs. Instant warnings will alert you when the temperature exceeds your preset level, making your job more efficient
- 【Longer Runtime, Fewer Charges】Designed for efficiency, this thermal imaging camera gives you 15 hours of power and automatic shut-off options at 5, 10, and 20-minute intervals to extend battery life. Keep going without the hassle of frequent charging, no matter how long your inspections last. A charging cable is given with the machine, but no charging head.
- 【Portable, Durable & Hassle-Free】Take this thermal imaging camera anywhere with its mini, pocket-friendly design. The ergonomic design makes it easier for you to hold during use, and the lightweight design is more suitable for long-term use. Engineered for durability, it can survive drops up to 2 meters without skipping a beat. Supports IP54 waterproof rating to ensure worry-free daily use. Get peace of mind with TOPDON's lifetime technical support to keep it running smoothly
Tonbo describes its design capabilities as covering electro-optics and infrared systems, as well as embedded vision systems for Indian and global companies. Its official overview is available on Tonbo Imaging’s website.
How the IPO is structured
The available filings and dated reporting describe an offer for sale (OFS): existing shareholders sell shares, and the company does not issue new shares through the offer. In an OFS, proceeds from shares sold generally go to the selling shareholders rather than being raised by the company as fresh capital.
Rank #2
- 【Dual Mode Inspection】Combines conventional thermal imaging (Center/Hot/Cold spot modes) with thermometer mode for flexible temperature analysis. Use full-screen thermal imaging to monitor moving animals, machinery, automotive, or HVAC systems in real time, ensuring continuous observation with no detail loss. When you need exact numbers such as kitchen use, thermometer mode provides quick, point-and-shoot readings with a clear digital display.
- 【User-Friendly Operation】Weighing just 240g, this compact thermal imager offers a balanced feel with a non-slip grip even during extended use. Intuitive button controls let you power on, navigate menus, capture images, and switch between seven color palettes effortlessly—so you can start inspecting right away.
- 【Multi-Scenario Application】Built with high-precision sensors (NETD < 50mK), it detects subtle temperature differences down to 0.05°C. The -4°F to 1022°F temperature range handles everything from household inspections to high-heat diagnostics, including home kitchens, insulation checks, and automotive maintenance.Adjustable emissivity and distance settings help improve accuracy across materials like cement, ceramic,etc.
- 【Fast Anomaly Detection with Instant Alerts】A 50° wide field of view lets you scan larger areas in less time. Set custom high and low temperature alarms for instant alerts when temperatures exceed your limits. Adjustable level and span settings enhance thermal contrast, making it easier to identify issues such as insulation gaps and floor heat loss.
- 【All-Day Battery Life 】The built-in 2500mAh rechargeable battery provides up to 14 hours of continuous use for uninterrupted inspections. Backed by a 1-year warranty for added peace of mind.
| IPO detail | What the available records say |
|---|---|
| Offer type | Offer for sale of existing equity shares; no fresh issue is described in the cited materials. |
| Proposed size | Business Standard reported on 10 July 2026 that the offer would comprise up to 18.09 million shares. |
| Shareholders selling | The 10 July 2026 report said the shares included promoter, promoter-group and existing-investor holdings. |
| Offer price | The draft offer document left the price blank. Check the current prospectus for a final price. |
| Bid dates | Not stated in the cited materials; consult the current prospectus for the timetable. |
Business Standard’s report of SEBI approval and the proposed share-sale structure is dated 10 July 2026: Business Standard’s IPO coverage. The regulatory record is the more useful guide to document status: SEBI’s public filing index displayed Tonbo’s red herring prospectus (RHP) and abridged prospectus on 12 October 2026. SEBI’s issue-status document characterized the proposed issue as “IPO (OFS Only).” See SEBI’s public-issues filing index.
What the IPO timeline establishes
- 30 December 2025: SEBI records Tonbo Imaging India Limited’s draft offer documents as filed.
- 10 July 2026: Business Standard reported that SEBI had approved the IPO proposal and described an offer for sale of up to 18.09 million shares.
- 12 October 2026: SEBI’s public index displayed the RHP and abridged prospectus.
The draft offer document described an OFS and left the offer price blank. A draft filing, an approval report and a later prospectus listing represent different points in the process; the latest prospectus is the place to verify the final offer details. The draft document is available through SEBI’s public-issues filings.
Rank #3
- 【Enhanced Thermal Clarity for Precise Inspections】The RT280 handheld thermal imaging camera features a 2.8-inch 320×240 LCD screen for smooth, detailed thermal visuals. Equipped with TISR technology, it enhances thermal image effective resolution from 120×90 to 240×180, enabling the capture of tiny temperature differences. Its 50°x 38° FOV and 25Hz frame rate deliver clear, smooth images, making it ideal for home inspections, electrical checks, mechanical fault diagnosis, and automotive engine inspections.
- 【Smart PC Analysis with 2D/3D & Temperature Insights】Easily transfer images from this thermal imager to Windows PC(Not compatible with Mac) for advanced analysis. The included software supports point, line, and area temperature analysis, 2D/3D thermal imaging, and automatic report generation. Complex thermal data from this infrared cameras thermal imaging device is instantly transformed into actionable, shareable insights, helping you solve problems efficiently and professionally.
- 【Built-in 8GB eMMC Storage for Over 20,000 Images】Capture and store more than 20,000 images and videos with this thermal camera, preserving every detail of your inspections. The 8GB eMMC storage ensures all critical thermal imaging data is saved securely and easily accessible. Whether documenting electrical panels, HVAC systems, or machinery, your ir camera keeps all inspection records organized and ready for analysis.
- 【Accurate Temperature Measurement with Smart Alerts】Measure temperatures from –4°F to 1022°F with ±3.6°F / ±2% accuracy. The RT280 thermal imaging camera automatically detects the highest, lowest, and central temperature points. High/low alarms instantly alert you to anomalies, making it easy to prevent overheating, insulation gaps, or mechanical faults. Clear visual and auditory warnings improve efficiency and safety in every inspection.
- 【9 Color Palettes, Laser Targeting & LED Light】Switch between 9 color palettes to visualize subtle temperature differences with clarity. The built-in laser pointer and LED light allow precise targeting in dark or confined spaces. This infrared camera makes it easy to locate hotspots, leaks, or irregular temperature patterns, delivering professional-grade thermal imaging for electrical, HVAC, plumbing, or mechanical diagnostics.
What investors should verify in the prospectus
The reported pre-IPO investment and the IPO are separate claims. Before relying on the ₹413 crore figure, look for a company or investor disclosure, or a clearly sourced transaction report, that identifies the date, participants, amount and terms. For IPO details, use the RHP and final prospectus to check the offer price, bid dates, share count and selling shareholders. The cited materials establish neither the ₹413 crore transaction nor its allocation among the named investors.
Quick Recap
Rank #4
- 【Dual Mode Inspection】Combines thermal imaging with Center/Hot/Cold spot modes for real-time visual temperature display, and integrates thermometer mode for fast point-and-shoot readings with precise digital output. Full-screen thermal imaging enables continuous monitoring of moving targets,ensuring stable observation without loss of detail during dynamic inspections.
- 【User-Friendly Operation】 At just 240g, this compact thermal imager features a non-slip grip and balanced handheld design for comfortable long-duration inspections or mobile use. It offers intuitive button controls for power on/off, menu navigation, and image capture, and supports 7 selectable color palettes, enabling fast switching.
- 【Multi-Scenario Application】It supports a broad measurement range from -4°F to 1022°F with enhanced with adjustable emissivity and distance settings,making it suitable for applications.Equipped with a high-sensitivity sensor (NETD < 50mK), the thermal camera can detect extremely subtle temperature differences as small as 0.05°C.
- 【Quick Anomaly Detection with Alerts 】Featuring a 50° wide field of view, the device enables faster scanning of large surfaces and broader inspection coverage. It supports custom high/low temperature alarms for instant notification when abnormal thermal conditions are detected. Level and span adjustment functions make it easier to clearly identify localized issues.
- 【All-Day Battery Life】Built-in 2500mAh rechargeable battery provides up to 14 hours of continuous operation, supporting full-day inspection without frequent recharging. The device also includes a 1-year warranty, ensuring long-term reliability and peace of mind for using.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
