Features: 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. Specifications: Item type: Frequency Measuring Device Material: ABS Frequency range: 1Mhz-2400Mhz RF power range: 0.1W-50W Impedance input: 50 ohm Accuracy: frequency is 140Mhz~170Mhz, when 400Mhz~470Mhz, +/- 10% Response time: 0.2s. Working temperature: 0~40℃ Battery: 3 x AAA batteries (not included) Current consumption: about 100mA Automatic shutdown time: 80s Package includes: 1 x Frequency Measuring Device 1 x Antenna 2 x Connecting wire 1 x Conversion interface Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.