Available as an option with the company's portable light towers, the LSC-100 Light Sequence Commander from Allmand automatically shuts on and off power to light towers — without operator interaction. As natural light decreases, the system's sensor engages the power unit and activates the lights. As light increases, the sensor automatically switches off the light and power unit. To prevent generator and light-circuit damage, the system starts the engine and brings it up to temperature before lights are activated, and then shuts the engine down when lights are deactivated. An eight-event digital timer allows the operator to preset activation and deactivation times. Estimated list price: $1,000 to $1,500.