Voltage:DC+12V Current:500mA Transmitting power:2000mW Working frequency band:1.2G/1.3G Transmitter parameters: Mediation type:FM Receiving frequency:0.9-1.2GHZ Receiving signals:audio, video, and image synchronous transmission Receiving sensitivity:-85dBm Video input level:1Vp-p Audio input level:1Vp-p Working temperature:-20-+50/-4-+122H Working humidity:85%RH Storage temperature:-40-+80/-40-+185H Specifications:73x41x14mm Channel selection:8-channel audio and video synchronization Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Colour:Gold Material:Aluminum alloy Package Contents: 1 x Audio Video Transmitter kit 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.