Products - Accessories TX 508 Products - Accessories TX 508 4-channel transmitter with self-programming and code copying.Functioning frequence: 433.92 MHz Self-programming from another transmitter.Functioning range: 80 m in open fieldPower supply: 12V battery. Download the installation manual hereManual TX-508 Go back to Accessories Do you need help? Contact our experts and ask for assistance Contact us!