DER EE pocket-size clamp meters are widely used in home and automotive work. Their lightweight and volume can be easy to carry anywhere. The unique metal clamps can be used to set it in any position of the device and display a reading of the current in the circuit without unplugging/switching off the power supply. Those clamp meters can be used as an AC/DC clamp meter, which is very suitable for testing voltage and current to be found troubleshooting in the circuit for technicians. DER EE is your best choice for testing electronic devices.