EL-USB-4 - 

Lascar's range of USB data loggers measure and record a variety of parameters such as temperature, humidity, voltage, current and carbon monoxide. Simply insert any of these loggers into your computer's USB port, name it, choose your required sampling rate, set high and low alarms if required and set the logger start time. Once configured, the logger can be removed from the computer to log independently. Data is downloaded back onto the PC where it can be analyzed and viewed as a graph. All loggers are supplied with FREE configuration software and a 3.6V or 3V battery (EL-USB-LITE only).

4 to 20mA measurement range

More than 32,000 Reading Capacity with Programmable Sample Rates

Two Programmable Alarm Thresholds with LED Indication

Measurements from a Variety of External Sensors Can Be Taken with Connection Via Screw Terminals Located in Cap