Receiver parameters: Working frequency band: 1.2G/1.3G Working voltage: DC12V Working current: 250mA Channel selection: 12 channel selection, digital display Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use Color: Silver Material: metal Package Contents: 1 * receiver 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.