Solid State/Digital Design Self-contained Low 3-Milliamp standby current Programmable delay from 15 min to 16 hours Status LEDs Waterproof construction -mounts anywhere Optional direct-ignition sensing (recommended for emergency vehicle applications) Low Voltage Protection (Turns off when system voltage falls below 10.5-Volts for 15-Seconds) 16.5-Volt Over Voltage Protection 5 second test mode (all switches off) Two year warranty