The smart TRMS digital multimeter fits comfortably in any pocket like a smartphone, yet it is equipped with many advantageous features. It is a versatile measuring device for DC and AC voltage, resistance, capacitance, and frequency measurements. The digital multimeter offers additional functions such as diode testing, a hold function, and a live test. Furthermore, it features non-contact voltage detection and is equipped with a 3.1-inch LCD display and touch buttons. The flat digital multimeter has an automatic range selection and a display range of 6,000 counts. The measurement quantity is automatically recognized, eliminating the need to switch the test leads. The live test allows for the detection of live wires. An integrated LED on the back of the device enables work in poorly lit environments. This smart digital multimeter also indicates when the batteries are low. To conserve battery life, the device automatically shuts off after a period of inactivity. The digital multimeter is ideal for use in electronics repair, home and building wiring, maintenance of electrical devices, as well as in laboratory and training environments.