RM404A is an 4000 counts auto-ranging digital multimeter, with flash light, extremely convenient to measure current, voltage, frequency even in the dark places. Features: Allows for resistance, voltage and current tests with a simple switch. 4000 counts true RMS measurement, make measurement more reliable. With backlightand flashlight, suitable for operation under dark environment. Data hold function, easier to read the measurement result. Turn off automatically several minutes of non-use to save energy. Easy to operate, one-handed operation, perfect choice for electronic measuring. Convenient and practical, small size, compact and easy to carry. Specifications: Model No.: RM404A DC Voltage Range: 40mV/400mV/4V/40V/400V/600V AC Voltage Range: 40mV/400mV/4V/40V/400V/600V DC Current Range: 40mA/400mA/4A/10A  AC Current Range: 40mA/400mA/4A/10A  Frequency Range:4Hz/40Hz/400Hz/4kHz/40kHz/400kHz/3MHz  Resistance Range: 400Ω/4KΩ/40KΩ/400KΩ/4MΩ NCV: yes Diode: yes Continuity: yes Sample Rate: 3 times per second Operating Temperature: 0-40℃ Storage Temperature: -20℃-60℃ Operating Hunidity: <75% Storage Hunidity: <80% Power: 2 * 1.5V AAA batteries(Not Included) Item weight: 121g / 4.25ounces Package weight: 172g / 6.06ounces Item size: 118 * 60 * 25mm / 4.65 * 2.36 * 0.98in Package size: 190 * 140 * 35mm / 7.48 * 5.51 * 1.38in Notes: 1. Due to the difference between different monitors,the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Due to the manual measurement and different measurement methods, please allow 1-3mm deviation. 3. Low level of a battery will result in incorrect reading.Change the batteries when battery level is low. Do not make measurements when the battery door is not propely placed. 4. Do not inpt voltage exceeds 36V DC or 25V AC when you are at ther seeting of measuring current. 5. Do NOT exceed the "maximum value" indicated in the Specification. 6. Turn off the product and remove the test leads from the test points before  changing batteries or fuses. Package List: 1 * Multimeter  2 * Test Leads 1 * Manual