Tempsens Instruments (India) Limited IPO - India's Largest Temperature Sensor Manufacturer Enters Capital Markets

The Tempsens Instruments (India) Limited IPO opens August 20 to 24, 2026, marking the public market debut of India's largest manufacturer of contact and non-contact temperature sensors by revenue. Tempsens Instruments (India) Limited, headquartered in Udaipur, Rajasthan, is a thermal engineering and specialised cable manufacturer engaged in the design and manufacture of customised temperature sensing solutions, electrical heating solutions, and specialised cables for industrial process applications.

The IPO raises ₹650 crore through a combination of a fresh issue of ₹95 crore and an Offer for Sale of ₹555 crore at a price band of ₹285 to ₹300 per share. The fresh issue proceeds go primarily towards capital expenditure for the company's electrical heating solutions and specialised cable solutions businesses, and prepayment or scheduled repayment of certain outstanding borrowings.

Tempsens Instruments traces its roots to 1990 (with group operations dating to 1987) and is promoted by the Rathi family, led by Managing Director V.P. Rathi. The company is the largest manufacturer of contact and non-contact temperature sensors in India by revenue, holding an approximate 10.5% market share in the temperature sensor segment in FY26. It has served more than 1,000 unique customers between April 2023 and March 2026.

IPO Details

The issue is priced at ₹285 to ₹300 per share. Retail investors can apply for a minimum of 1 lot (50 shares) at ₹15,000, and up to 13 lots (650 shares) at ₹1,95,000. Read all related documents carefully before making investment decisions.

IPO Date and Timetable

The IPO opens August 20, 2026 and closes August 24. Allotment is finalised on August 25, with shares expected to list on BSE and NSE on August 28, 2026.

About Tempsens Instruments (India) Limited

Tempsens Instruments (India) Limited was incorporated in 1990 and is based in Udaipur, Rajasthan. The company designs and manufactures customised temperature sensing solutions, electrical heating solutions, and specialised cables, serving critical industrial process industries where accurate temperature measurement and control are essential. It is closely linked to the wider Pyrotech Group of Udaipur, which traces its origins to 1976, and has since built out a global manufacturing and distribution footprint, including operations connected to Germany and Indonesia and a distributor network spanning more than 20 countries.

Promoter Group:

Led by the Rathi family, including Managing Director V.P. Rathi

Pre-IPO promoter and promoter group holding: 80.51% | Post-IPO: 65.67%

Business Segments and Market Position

Tempsens is the largest manufacturer of contact and non-contact temperature sensors in India by revenue, with an approximate 10.5% market share in the temperature sensor segment in Fiscal 2026 (Source: F&S Report). The company's offerings span three broad segments:

• Temperature sensing solutions like thermocouples, resistance temperature detectors (RTDs), non-contact/infrared sensors, calibration equipment

• Electrical heating solutions like industrial heaters and heating systems for process industries

• Specialised cables like mineral-insulated and other engineered cables for high-temperature and critical environments

The revenue mix is diversified across Projects and MRO (maintenance, repair and operations) work, which analysts flag as adding resilience against order lumpiness typical of industrial capital goods businesses. The company served more than 1,000 unique customers over the three years to March 2026, with meaningful export exposure to global process industries.

Financial Performance

Use of Proceeds

The fresh issue proceeds of ₹95 crore will be utilised as follows:

Unlike many industrial IPOs, Out of 650cr, ₹555 crore, or roughly 85% is an Offer for Sale by promoter group and other shareholders, meaning most proceeds go to selling shareholders rather than into the business. The fresh issue component funding growth capex and deleveraging is comparatively modest.

GMP and Allotment Details

GMP has been notably volatile through the IPO process, tracked differently across platforms: readings ranged from a low of around ₹40 to highs above ₹290 in the days before and during the offer, with the most recent readings around ₹260-₹290 (roughly 87-98% premium) as of August 21, 2026, implying an indicative listing price in the ₹560-₹590 range against the ₹300 upper band. Some trackers reported lower readings (₹73-₹110) on different dates, underscoring how fast and unofficial GMP quotes move; investors should treat any single GMP figure as directional only. GMP is unofficial and unregulated so listing gains cannot be guaranteed.

• Lot size: 50 shares (1 lot) at ₹15,000

• Allotment date: August 25, 2026

• Anchor investors: Raised ₹194.55 crore, with the anchor bid date on August 19, 2026

Investor Allocation

• QIB: 50% of net offer (1,08,08,334 shares)

• NII: 15% of net offer (32,42,500 shares)

• Retail: 35% of net offer (75,65,833 shares)

The IPO drew strong early demand, reportedly getting subscribed around 2x within 90 minutes of opening, with overall subscription later climbing sharply above 20x on some trackers by the close of bidding.

Peer Comparison

Tempsens' post-IPO P/E of approximately 35.38x compares against a cited peer average of roughly 47.3x, suggesting a relative valuation discount, though analysts caution that there is no directly comparable listed Indian company covering all three of Tempsens' business segments (temperature sensing, electrical heating, and specialised cables) together, making conventional peer comparison imperfect. On an EV/EBITDA basis, the stock is valued at approximately 22.14x, which several brokerages view as reasonable for a niche, export-oriented industrial business with a 35.2% EBITDA CAGR over FY24-26.

Risks to Consider

• Large OFS Structure : Of the ₹650 crore issue, ₹555 crore (about 85%) is an Offer for Sale, meaning the bulk of proceeds go to promoters and existing shareholders rather than into the business. Only ₹95 crore of fresh capital is being raised for capex and debt repayment.

• Declining Return Ratios : ROE fell to 13.54% in FY26 from 20.02% in FY24 as the equity base expanded. While ROCE at 21.61% remains healthy, the moderating ROE trend is worth monitoring as the company scales.

• Rising Working Capital Intensity : Inventory days rose from 76 to 92 and receivable days from 61 to 70 between FY24 and FY26. This reflects business scale-up but also means cash cycles need careful management, particularly given the company's project-based revenue.

• Manufacturing Concentration in Udaipur : A significant share of manufacturing is concentrated in and around Udaipur, Rajasthan. Any disruption at this location could disproportionately affect production and deliveries.

• Sector Cyclicality : Demand for temperature sensing, industrial heating, and specialised cable solutions is linked to capital expenditure cycles in process industries (steel, cement, glass, power, chemicals, and similar sectors). A slowdown in industrial capex could weigh on order inflows.

• No Direct Listed Comparable : There is no single listed Indian peer that mirrors Tempsens' combined product portfolio, making it harder for investors to benchmark valuation purely on relative multiples; the story rests more on company-specific execution than sector re-rating.

• Moderating Revenue Growth : Revenue growth slowed to 17.53% in FY26 from 37.74% in FY25. Investors should assess whether this reflects a normalisation after a strong FY25 or the start of a more durable deceleration.

Conclusion

Tempsens Instruments (India) Limited is a notable IPO, the public debut of India's largest manufacturer of contact and non-contact temperature sensors by revenue, with a differentiated, backward-integrated manufacturing base and an established international footprint. The company has delivered a strong financials over FY24-26, supported by a low-leverage balance sheet and near net debt-free status.

At a post-IPO P/E of approximately 35.38x, the issue is priced below the cited peer average of about 47.3x, though the absence of a true listed comparable makes this comparison imperfect. GMP readings have been volatile, ranging widely through the offer period, and should be treated as an unofficial and unreliable predictor of listing gains. Key risks include the heavily OFS-weighted structure (85% of the issue), a declining ROE trend, rising working capital intensity, and geographic manufacturing concentration in Udaipur. Several brokerages, including SBI Securities, have issued Subscribe recommendations citing market leadership, diversified business model, and export growth, while flagging the full valuation and working-capital-intensive nature of the business. Well-informed investors with a medium to long-term horizon may consider this for niche industrial and export sector exposure.

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