Profile: Industrial Detection Systems designs and manufactures metal detection systems for industrial, commercial, and military applications. The SD-1 unit detects metal objects (staples, paper clips & straight pins) in batches of checks passed through the unit by hand. It uses a standard wall plug that converts AC to DC. The unit itself is low voltage DC (9V), drawing about 22 mA of current during normal use, and 35 mA when indicating a target. The front panel includes the on/off switch, a power indicator, a sensitivity knob, a target indicator light, and a target audio signal. When the unit is turned on, the green light will turn on, and stay on until the unit is switched off. The unit will give a short beep, and the red light will stay lit until the unit is ready for use. Once the unit is properly calibrated, the unit will beep and light the red indicator when it detects a metal object passing through the center. The street sweeper is designed for checking a wide swath of road for large hidden metal (unmarked manhole covers, and water valve covers). The street sweeper is a pulse machine that runs up to eight coils, providing large coverage (up to eight feet) with localized target indication.