Viper replacement transmitter remote for select viper alarms 7142vreplacement car alarm transmitter1-way transmitterfor viper responder350 and viper 350plus car alarm systems4-button remote allows for full adjustments with the compatible alarm system exclusive super code hopping ...Viper replacement transmitter remote for select viper alarms 7142vreplacement car alarm transmitter1-way transmitterfor viper responder350 and viper 350plus car alarm systems4-button remote allows for full adjustments with the compatible alarm system exclusive super code hopping bright blue led status indicator2/66 18 quintillion rolling codes vipers's 7145v 4-button remote works with their 350 plus, 4105v, and responder 350 car security systems. Its 1-way transmissions send your commands to the alarm, while its four buttons cover arming and disarming the alarm, locking and unlocking the doors, a panic button, and auxiliary output features that can be added like a trunk release. The 7145v includes two cr2016 batteries and has a range of 1500 feet.