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Know the journey, trust the result with reliable, cold-chain temperature verification. 

When simplicity is as important as quality, RTEL Temperature Indicators offer reliable temperature verification in a compact, easy-to-use format with visual LED prompts. Whether you’re shipping or storing cold-chain pharmaceuticals or other perishables, these monitoring tools provide clear, actionable insights to help ensure safety and compliance.

User-Friendly

User Friendly
Intuitive operation and clear prompts

High Capacity

Customize
Configure alarm & start delay settings

3-Point NIST traceable calibration

3-Point NIST
Traceable calibration ensures accuracy

Wide Temp Range

Wide Temp Range
-30°C—70°C
(-22°F—158°F)

Wide Temp Range

Waterproof
Shielded within a food-grade composite bag

RTEL One-Series

Single-Use Temperature Indicators for Pharma & Food

Monitor every shipment with clarity and confidence—because cold-chain integrity starts with knowing.

Choose Your RTEL Temperature Indicator

RTEL 100 Single-Use Temperature Indicator

  • Single-use cold-chain monitoring
  • Simple GO/NO-GO LED Feedback
  • Easy to use ‘tab-break’ start
  • Clear at-home verification – No buttons, no guesswork
  • Cost-effective temperature monitoring solution
RTEL 100 Single-Use Cold-Chain Temperature Indicator
View RTEL 100 Specification Sheet

RTEL 101 Single-Use Temperature Indicator with Display

  • Single-use temperature monitoring
  • LCD Display – Viewable from any angle
  • Check Min, Max, & Avg Temps mid-transit or logging period
  • Perfect for multi-stop or vertically integrated cold-chain logistics
  • Push button start/stop
RTEL 101 Cold-Chain Temperature Indicator w/ LCD Display
View RTEL 101 Specification Sheet

RTEL Provides Reliable Cold Chain Verification for Pharmaceutical, Agriculture, and Food Delivery.

Ensure safe deliveries with trusted temperature indicators designed for compliance and product integrity from the company delivering cold-chain monitoring solutions for over four decades.