The CMR is a line voltage sensor that easily mounts directly to a ceiling. Ceiling mount sensors are offered in a multitude of configurations which address many applications. Lens options include large motion extended range, small motion standard range and bi-directional for hallways. These sensors are capable of covering an entire private office or small room by themselves. Features Color: White Type: Large Motion 360º PIR occupancy detection Voltage: 120/230/277 VAC Dual Relay Configurable using the Sensor Switch Mobile App 360° coverage pattern Push- button programmable, adjustable time delays, and multiple operating modes? 100 hr lamp burn-in timer No field calibration or sensitivity adjustments required? Convenient test mode Green LED indicator Dimensions Diameter: 4.55" Height: 1.55" Warranty 5-Year Limited Warranty Document Spec Sheet Labels: