Description: brand new and high quality Higher reliability and durable quality. 0802 LCD display, low-power consumption. Standard interface for easy connections with other tests or antennas. Input is via an SMA jack (female). Specifications: Color: Dark Green Material: PCB + FR4 Power Mode: 9V Battery (Not Included) Display: 38 * 16mm LCD Display Item Size: 60 * 33 * 26.5mm / 2.36 * 1.30 * 1.04in Item Weight: 45g / 1.54oz Package Size: 11 * 6 * 3cm / 5.91 * 4.72 * 1.18in Display: Digital 0802 LCD Temperature: When operating: 0~40°C, when stored: -30~60°C Working elevation: 0 to 2000 meters Relative humidity: non-condensing <10 ° Cv Type of battery : 6F22 type 9v Working power: DV=9V Working current: typical working current 30mA Test frequency: 1 ~ 500 MHz, the limit is 640M, the accuracy of the over-range part will be lower Resolution: 100Hz Note:Accuracy can only be adjusted to the second digit of the decimal point, less than one-tenth of the precision Instructions: Connect to the 6F22 9v battery, toggle the switch, and connect to the signal source under test after power on. This frequency meter interface is SMA.