The Edu-Lab Student Joulemeter is designed specifically for student use. The unit can measure energy from 1 joule to 999,999 joules, with accuracy of 3%, but 1% accuracy is typical. Power is by means of a 9V DC mains adaptor included.

Reliable performance
Reproducible results
Versatile specifications
Safe to use
Unique, compact design
Robust build quality
Sealed easy touch switches
Stackable
Wipe clean
Safe on/off switch
CE marked

Specification:
Input voltage: 0V to 15V AC, or 0V to 21V DC (maximum).
Maximum load current : 10A AC/DC
Circuitry : Microprocessor, combined with precision voltage multiplier.
Built-in timing function, the start button starts timer and joulemeter together and at the same time starts powering up the load. The stop button stops the timer and joulemeter, and disconnects the input power from the load.
Dimensions: 90 x 90 x33mm
Display: 2 x 16 character LCD