This 2.4G simple scanner adopt nRF24L01+ module, which can be used for model aircrafts signal and wifi signal detections. With low voltage automatic shutdown function, which can protect the lithium battery, prolong the using time. The recharging port is Type-c, which is convenient to recharging it. The screen using 0.96inch OLED display screen, which can let you see the data more clearly, give you a better using experience. This machine can scan 128 channels, from 2.400mhz-2.527mhz every 1mhz one frequency point. It automatically run after open, through the following scale and the height of the corresponding column line, to estimate the strength of the corresponding channel. Working current: 40mAh Colour:White Material:PVC Package Contents: 1 x Simple Scanner 1 x USB Cable 1 x 2.4G Antenna Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.