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SENCNNEU868

The TEKTELIC TUNDRA (SENCNNEU868-J) is a rugged LoRaWAN cold chain sensor purpose-built for monitoring temperature and humidity in fridges, freezers, cold rooms, and refrigerated transport — environments where most sensors struggle and lose battery life rapidly. TUNDRA is engineered specifically for performance at extreme low temperatures, delivering a genuine 10-year battery life on a single C-cell LTC battery down to −40 °C. The IP67 sealed enclosure supports operation from −40 to +70 °C and includes a screw-mount bracket for side-mounting to fridges and freezers. Onboard storage logs readings during periods without LoRaWAN coverage, enabling continuous temperature records even when units are moved in and out of range (store-and-forward function). Built around a precision Sensirion temperature and humidity sensor. Ideal for HACCP compliance, pharmaceutical and vaccine storage, and any commercial or industrial cold storage application.
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79.29 € 79.29 € (Tax excluded)
79.29 € (Tax excluded)

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Key features Technical Specs Documentation

Key features

Cold chain monitoringTemperature + humidity · designed for sub-zero operation
Rugged IP67Sealed enclosure · −40 to +70 °C · zero maintenance
10 years batteryGenuine 10-year life even in freezers · C-cell LTC
Store & forwardOnboard data logging · saves readings when out of coverage
LoRaWAN EU868Class A · internal antenna · low duty cycle
Easy deploymentScrew-mount bracket included · LeapX onboarding · ATLAS


Technical Specs

Ambient temperaturePrecision sensor · −40 to +70 °C
Ambient humidityBuilt-in relative humidity sensor
Sensor typeSensirion-based
Data loggingOnboard storage · store-and-forward function
Reporting modesPeriodic and threshold-based
Battery indicatorRemaining battery level reporting


LoRaWAN radioEU868 (863–870 MHz) · Class A
AntennaInternal
BatteryC-cell LTC · user-replaceable
Battery life10 years (configuration dependent · validated for sub-zero operation)
Other regions availableUS915, AU915, AS923, IN865, KR920


OnboardingQR-based activation via TEKTELIC LeapX app
Remote configurationOTA via LoRaWAN downlinks · ATLAS or LeapX
Configurable parametersReporting intervals · temperature/humidity thresholds · alarms
Store and forwardBuffers readings during connectivity gaps · uplinks when reconnected
IntegrationOpen API · compatible with TTN, ChirpStack, Helium, Loriot and others


Operating temperature−40 °C to +70 °C
Ingress protectionIP67
MountingScrew-mount bracket (included)
Form factorSealed industrial enclosure
ComplianceCE · LoRaWAN certified



Other regions: This product page covers the EU868 variant. Versions for US915, AU915, AS923, IN865 and KR920 channel plans are available on request.


Use cases: Commercial fridges and freezers · pharmacy and vaccine storage · HACCP compliance in restaurants and hospitality · cold storage rooms · refrigerated transport · laboratory cold chain · Legionella water temperature monitoring.


External probe variant: For applications where the sensor must remain outside the cold chamber (e.g., very deep freezers), the TUNDRA with external probe variant (SENCMPEU868-J) is available separately.


Documentation

TUNDRA Cold Room Temperature & Humidity Sensor Product Page (Tektelic)

TUNDRA Spec Sheet (PDF)

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