Irvine, Calif.-based SECO-LARM’s ENFORCER E-964-D390Q multifrequency twin photobeam detector features four selectable channel frequencies. The detector can provide enhanced perimeter protection by reducing crosstalk between multiple units. The product has a range of up to 390 feet while twin beams provide perimeter security with minimal false alarms. It features lensed optics to reinforce beam strength and provides immunity to false alarms due to environmental conditions.