GY561 RF Digital Power Meter and Frequency Counter for 2‑Way Radio with SMA‑F Cable

Feature： 1. Designed to measure the frequency and power of radio equipment such as walkie‑talkies and car radios. 2. When using an external antenna, the frequency can be measured in a non‑contact manner. 3. Built‑in dummy load, easy to use, more reliable test results. 4. High quality and high performance. Convenient and highly reliable. 5. Professional manufacturing, stable performance and high reliability. Specification： Condition： 100percent brand newItem type： Frequency Measuring DeviceMaterial： ABSColor： As picture shownWeight： Approx. 155g Frequency range： 1Mhz-2400Mhz RF power range： 0.1W-50W Impedance input： 50Ohm accuracy： frequency is 140Mhz~170Mhz, when 400Mhz~470Mhz, +- 10percent Response time： 0.2s. Working temperature： 0~40 celsius Battery： 3 x AAA batteries (not included) Current consumption： about 100mA Automatic shutdown time： 80s. Package List： 1 x Frequency Measuring Device1 x Antenna2 x Connecting wire1 x Conversion interface1 x Instruction