Lascar Electronics EL-USB-2+ Temperature and Humidity Data Logger, -35 to +80°C, 0 to 100% RH, USB Interface

Logs up to 32,764 temperature and humidity readings with ±0.5°C accuracy across a -35 to +80°C range. The EL-USB-2+ is a standalone USB data logger that stores 16,382 temperature and 16,382 humidity measurements, with user-selectable logging rates from 10 seconds to 12 hours. Its 0.5°C temperature resolution and 0.5% RH humidity resolution provide detailed environmental monitoring for cold chain, storage, and facility management applications.

Overview

The Lascar Electronics EL-USB-2+ is a compact, battery-powered data logger that records both temperature and relative humidity. It connects directly to a PC's USB port for setup and data download using the EasyLog USB software. The logger features programmable high and low alarm thresholds for both parameters, indicated by red and green LED lights. A user-replaceable 1/2 AA 3.6V lithium battery provides up to two years of operation depending on logging rate and ambient temperature.

What stands out

• Wide measurement range: -35 to +80°C and 0 to 100% relative humidity
• High capacity: 32,764 total readings (16,382 per channel)
• Flexible logging intervals: from 10 seconds to 12 hours
• Visual alarm indication via red/green LEDs
• IP67 rated when the protective cap is fitted
• User-replaceable battery for extended field use

Technical details

• Temperature accuracy: ±0.5°C typical
• Temperature resolution: 0.5°C
• Humidity accuracy: ±2.5% RH typical (10 to 90% RH)
• Humidity resolution: 0.5% RH
• Interface: USB 2.0
• Power source: 1/2 AA 3.6V lithium battery
• Battery life: up to 2 years
• Software compatibility: Windows 7, 8, 10, 11

Our verdict

The EL-USB-2+ delivers reliable, high-resolution environmental logging in a rugged, easy-to-use package. Its long battery life and generous storage make it ideal for unattended monitoring in warehouses, laboratories, and transport containers.