There are simple meters for education and high precise meters for laboratory. Student meter is always with simple function and range. MS series meter has wide range for measuring the voltage, current and power of the circuit. It is suitable for both education and laboratory. It is also suitable for the industry as they are the portable meter. JL series meter is always using in electrotechnology measuring. We also have a digital multimeter, both portable and benchtop. Some of portable digital multimeter can communicate with cell phone via bluetooth. The user can install an application into the cell phone to save, recall and analyse the measurement result. Portable LCR meter, portable transistor tester, portalbe earth resistance tester and insulation resistance meter are also very useful for education.