Viper 476C 476V Replacement Remote Control Transmitter - 1 Remote -For Viper PC 500 HF, 550 HFF, 550 ESP, 600HF -PC 600 HF, 800 SHF, 800 ESP -VALET 450R, AUTOMATE 25, 425, 435 -SIDEWINDER PC 6000 & 6500 HF, 6500 ESP, PC 7000 SHF -4 Button Super Code Hopping Remote.