The TR-4 PAC Audio Low-Voltage Remote Turn-On Trigger turns on the amp or subwoofer in your car audio system, using a 1-second delay to safeguard your car stereo by eliminating pops. It supplies up to two amps of current and with a trigger as little as 8/10 volts, so it draws minimally on your car's electrical system. This turn-on trigger can provide remote startup for multiple amps or antennas in a car and is also compatible with most amp installations where a remote is needed.

Add a remote-turn on for your aftermarket amplifier with this Low-Voltage Remote Turn-On Trigger by PAC. The TR-4 accepts voltages as low as 0.8V while providing a 12V turn-on lead. This universal low voltage trigger module also provides a one second delay to prevent amplifier turn-on pops for smoother and safer start-up.