48 channels: Cover A, B, E bands and F band ( band), 4 bands and all frequencies compactable Two switching buttons: CH button for frequencies channels switching, FR button for frequencies bands switching Two digits display: one for CH and the other for FR, real-time positioning which frequency band and which channel received Power off memory: the very last frequency band and channel video and audio signal outputs THIS IS THE 48-CHANNEL EDITION OF 5.8G 600mW A/V WIRELESS SYSTEM. TX TS832 specs: Power input: 7.4-16V (3S Lipo suggested) Transmitting power: 600mA Antenna gain: 2db Working current: 220mA at 12V Video bandwidth: 8M Audio bandwidth: 6.5M Weight: 22g Dimension: 54x 32x 10mm(excluding antenna) Note:TX antenna must be installed properly before it is switched on, power on without install antenna, or a improper antenna was used may easily burn the TX Due to different product batches, the words on the product and some accessory details may be different, which not affect the use. Color:As Shown Material:Plastic+PC Package Contents: 1 * TS832 48CH 5.8G Transmitter 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.