Leviton's self-contained passive infrared ceiling occupancy sensor is the cost-effective choice for commercial and institutional installations, where installation of the recessed ceiling unit is difficult, inconvenient or costly. Available in 120 V, 220 V and 277 V versions, the ODC0S-I is ideal for storage areas, small bathrooms, copy rooms, mop/sink closets or small spaces without wall switches. The self-contained ceiling sensor does not require an external control unit for power or switching the load on and off. Sensor and switching relay in one unit reduces labor and need for additional materials 360 deg field-of-view with approximately 530 sq-ft of coverage when mounted at 8 ft. This reduces the number of additional sensors typically required in many spaces Adjustable delayed-off time setting between 20 sec and 15 min allows custom adjustment for maximum savings Light sensor an ambient light override option can be set between 2 and 500+ foot candles and full brightness to prevent the sensor from switching lights ON when ample natural sunlight is available. Hold-Off feature Segmented Fresnel lens contains 79 segments for optimum sensitivity and detection performance