Zebra Environmental Sensors

Zebra TransTracker® Shipment Indicators

Gain visibility into potentially damaging temperature exposure during shipping and storage. Zebra TransTracker single-use indicators provide irreversible visual signals for heat events, freeze events, or combined heat and freeze exposure, helping support cold chain monitoring and shipment evaluation.

Temperature Monitoring for Sensitive Shipments

Zebra TransTracker indicators, manufactured by Temptime, are designed to help identify temperature excursions during transportation. These single-use visual indicators offer an accessible way to monitor shipments without requiring an electronic data logger.

Heat Event Monitoring

Identify potentially damaging heat exposure with immediate, quick, or delayed-response indicator options.

Freeze Event Monitoring

Detect qualifying freeze exposure with a visible, irreversible FREEZEmarker response.

Dual Temperature Monitoring

Combine heat and freeze exposure monitoring in one shipment indicator format.

Explore TransTracker Shipment Indicator Options

Select an indicator based on whether you need to monitor heat exposure, freeze exposure, or both during shipment.

TransTracker® Heat Event Indicators

TransTracker heat event indicators provide an irreversible visual warning following exposure to specified high-temperature conditions. Available response-time options support a range of temperature-sensitive shipping applications.

Zebra TransTracker heat event shipment indicators

Three Heat Response Options

Immediate response: Indication within approximately 15 seconds of qualifying temperature exposure.
Quick response: Indication in 15 minutes or less following qualifying heat exposure.
Delayed response: Indication following approximately 2 hours of qualifying heat exposure.

Select the response type that best aligns with your product's temperature sensitivity and shipping requirements.

TransTracker F — Delayed Heat (PDF) TransTracker D — Immediate Heat (PDF) TransTracker D — Quick Heat (PDF)

TransTracker® Freeze Event Indicators

TransTracker freeze event indicators incorporate FREEZEmarker technology to provide a visible indication of qualifying freeze exposure during transportation. The irreversible response helps identify shipments that may require further evaluation following a freeze event.

Zebra TransTracker shipment card with FREEZEmarker freeze indicator

TransTracker C Freeze Monitoring

The indicator initially displays a green circle with a visible white checkmark. After qualifying freeze exposure, the indicator becomes partially or completely white, obscuring the checkmark.

Available response temperatures help support different freeze-sensitive shipment requirements.

TransTracker C Technical Specifications

Indicator	Response Temperature	Response Time	Accuracy	Dimensions
TransTracker C	0°C	30 minutes	±1°C	54 × 84 mm
TransTracker C	−1°C	30 minutes	±1°C	54 × 84 mm
TransTracker C	−6°C	30 minutes	±2°C	54 × 84 mm

TransTracker C — Freeze Event (PDF)

TransTracker® Dual Heat and Freeze Indicators

TransTracker dual temperature indicators combine heat and freeze exposure monitoring in a single shipment indicator. This provides a convenient visual way to identify qualifying temperature excursions at either end of a product's specified temperature range.

Zebra TransTracker dual heat and freeze shipment indicators

Combined Temperature Exposure Visibility

TransTracker CF: Freeze and delayed heat-event indication.
TransTracker CD: Freeze and immediate heat-event indication.
TransTracker CD: Freeze and quick heat-event indication.

Dual monitoring formats are useful for shipments where exposure to excessive heat or freezing temperatures may affect product suitability.

TransTracker CF — Freeze / Delayed Heat (PDF) TransTracker CD — Freeze / Immediate Heat (PDF) TransTracker CD — Freeze / Quick Heat (PDF)

Explore Other Temperature Monitoring Solutions

Looking for product-level heat indicators, reversible temperature cues, or individual freeze indicators? Explore these related Zebra solutions.

Need Temperature Monitoring for Shipments?

Contact BarcodeFactory to discuss TransTracker heat, freeze, and dual temperature indicators for your shipping and cold chain applications.