The Optex EX 35T breaks the mold of low cost, quality deficient detectors. You can select between precise wide angle and long range coverage to fit your application. Multi level and pet alley detection patterns add further levels of variability and limit false alarms drastically. By incorporating patented multi focus technology into the spherically designed lens, the EX 35T has successfully eliminated sensitivity problems caused by changes in detection patterns. Tall zone patterns eliminate the need for vertical adjustment. This sensor is designed for hardwired use. For a battery powered version designed to be used with a transmitter of a wireless security system please see the Optex EX 35R.