ITEM NAME:High Sensitivity OLED Display Tester Meter Handheld Analyzer 2.4G Band Features: Strong Compatible: Fully compatible with the latest open source software for nRF24L01pScannerOled. Portable: Small size, easy to carry, easy to use, plug in the power supply. Scanning Range: Automatic scanning of the 2.4G band. Signal Testing: It is very suitable for RC enthusiasts to test the surrounding radio signals before controlling the model to reduce the remote control and damage the model. Voltage: The supply voltage is 5-16.8V (up to 4S). Specifications: Item type: handheld spectrum analyzer Material: PCB Color: black + red Frequency rabge: 2.4G Interface: USB Supply voltage: 5-16.8V (up to 4S) Size: about 27.5 x 28 x 11.2mm Package includes: 1pc x handheld spectrum analyzer Notes: Transition: 1cm=10mm=0.39inch 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3cm measuring deviation due to manual measurement..Item type: handheld spectrum analyzer. 1pc x handheld spectrum analyzer. Scanning Range: Automatic scanning of the 2.4G band. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures.