The ALC-WM-DT-BT is a Dual Tech (PIR and Ultrasonic) Sensor designed for use with the ARISTA Lighting Controls System by Intermatic and will control lighting based upon occupancy/vacancy. If space is configured for occupancy and movement is detected, the sensor informs the ARISTA controller(s) in the space and the lights will illuminate. The light will turn OFF after the sensors deem the room vacant and the timeout period expires. If space is configured for vacancy, the ARISTA controller(s) in the space will only react when they are manually activated. The lights will turn off after the ALC-WM-DT-BT deems the space vacant and the timeout period expires. Pricing Available Upon Request.