The Holtronic neo® Penta is a compact, single-use electronic temperature alarm indicator with up to five programmable LED threshold alerts. At just 6g, with ±0.5°C accuracy, irreversible tamper-proof breach records and a 2-year shelf life, it is the complete single-use cold chain monitoring solution for pharmaceuticals, food safety and logistics.

The right tool for one-way cold chains and high-volume monitoring
Single-use indicators eliminate complexity, reduce risk and provide the cleanest possible compliance record. For outbound-only logistics, high-volume deployments and applications where tamper-evidence is non-negotiable, a single-use indicator is simply the most appropriate tool.
The neo® Penta is available in industry-standard threshold configurations covering pharmaceutical cold chain, ambient and controlled room temperature storage, and frozen goods monitoring.
Custom threshold configurations are available. Contact the Holtronic team to specify a bespoke configuration for your product and supply chain requirements.
Stock configurations include:
The neo® Penta’s four-stage process requires no training, no infrastructure and no specialist equipment at any point. The entire intelligence of the device is self-contained and legible to anyone.
The neo® Penta activates with a press-and-hold of the activation button. A start delay allows the indicator to be attached to the product and placed within the monitored environment before logging begins preventing false readings caused by handling temperature during packing.
Once active, the green power LED flashes every 8 seconds to confirm that monitoring is in progress. The indicator is immediately ready for attachment to individual products, placed inside packaging, or fixed to outer cartons using the self-adhesive backing — with no additional tools, hardware or pairing process required.
Press-and-hold activation: no pairing, no configuration |
Programmable start delay prevents handling false alarms |
Self-adhesive backing for attachment to any surface or packaging |
The neo® Penta is designed and specified for pharmaceutical, food and logistics environments where temperature monitoring is not discretionary.
Its irreversible LED record, unique serial number traceability and precision accuracy provide the documented evidence that regulators, quality auditors and food safety inspectors require.
Once a threshold LED activates, it cannot be cleared by anyone in the supply chain. This provides auditors with unambiguous evidence that the breach record has not been manipulated.
Every neo® Penta carries a unique serial number enabling full production tracking and individual unit traceability — essential for pharmaceutical recalls, food incident investigations and GDP audit trails.
±0.5°C accuracy verified against NIST traceable standards meets pharmaceutical monitoring requirements and food safety regulations across all major markets.
Because the neo® Penta’s breach record is visual and self-contained, there is no dependency on systems, software or connectivity for compliance evidence — reducing audit complexity and operational risk.


Any supply chain that moves temperature-sensitive products in one direction — from producer to consumer, from manufacturer to pharmacy, from processor to retailer — is an application for the neo® Penta.
A single-use temperature indicator is a disposable electronic device that continuously monitors and records temperature conditions throughout a product’s journey, displaying breach alerts via LED indicators that are readable without any equipment.
The Holtronic neo® Penta is a single-use temperature indicator with up to five programmable LED threshold alarms, ±0.5°C accuracy, tamper-proof irreversible breach records and a 2-year shelf life.
Once used, it is not reset or reused — it provides a clean, unambiguous record for one journey only.
Single-use indicators are the right choice for one-way supply chains, high-volume deployments and applications where tamper-evident freshness is essential for compliance.
Because each neo® Penta is used only once, there is no carry-over breach data, no reset process to verify and no risk of a compromised device being redeployed. For return-to-base supply chains where the same indicator travels back with packaging, Holtronic’s reusable temperature indicator is more cost-effective.
No. The neo® Penta’s complete breach history is communicated entirely through its LED array, which is readable by anyone — warehouse staff, drivers, receiving teams, pharmacists or auditors — without any reader device, smartphone, app or internet connection.
For applications requiring downloadable reports and wireless data transfer, Holtronic’s affordable data logger is the appropriate Holtronic product.
Request samples of the Neo Penta — in your choice of threshold configuration — and test it in your own supply chain environment. Our UK-based team is available to discuss custom configurations for your specific product and application.



