Poduct information: Name: 5.8G wireless audio and video receiving module RX5808 Model: RX5808 Features: Receiver Frequency: 5645-5945MHz; 8channels Receiving sensitivity: -90dBm Frequency control: built-in frequency phase-locked loop AV output: directly output analog audio and video signals Supply voltage: 3.5-5.5V Supply current: 170mA Dimensions: 28 x 23 x 3mm Color: Silver & Blue Material: PCB+metal Package Contents: 5 x Wireless Audio Video Receiver Module 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.