Reliable, Self-Powered Data Loggers

ACR data loggers are proven, self-powered instruments for reliable data logging across temperature, humidity, AC/DC current and voltage, pressure, CO₂, and process signals (4–20 mA, 0–10 V). From coin-sized units to multi-channel systems, they’re built for long deployments and deliver accurate, time-stamped records with audit-ready exports.

  • Wide temperature measurement range options 
  • Precision and accuracy (up to 16-bit resolution)
  • Single-channel and multi-channel models
  • Autonomous operation, no cords or wired power needed
  • Intuitive software for fast graphing, and one-click reporting

Our Data Logger Product Families

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SmartButtons - Coin-Sized Temperature

Coin-sized, self-powered temperature loggers that go where bigger units can’t. Ideal for multi-point and fleet use—shipments, cold storage, display cases, field studies, and enclosures.

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SRX Precision Multi-Channel Loggers

Multi-channel, precision self-powered loggers for temperature, humidity, thermocouples, thermistors, process variables (incl. 4–20 mA & 0–10 Vdc), and AC current.

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Nautilus - for In-Process Extreme Environments

Compact stainless steel or anodized aluminum loggers built to withstand high temperatures and harsh conditions—ideal for sterilization processes such as autoclaves, or other hygienic environments where durability and cleanability are essential.

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JR-2000 Single Channel USB Temperature

Single-channel USB temperature logger, perfect for in-building, storage, transport, and environmental monitoring across diverse industries.

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SmartReader Plus - Proven Reliability 

Directly measures and records variables like temperature, humidity, pressure, electric current, analog voltage, current loop, and pulses.

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PowerWatch Voltage Event Loggers

Monitors and records essential voltage disturbances. Plugs into any power receptacle to track basic voltage events.

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CAL-Logger - Compressed Air Logger

Efficient data logger for easy monitoring and troubleshooting of pneumatic control systems.

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