Motion-activated chime with remote receiver that operates up to 200 feet away. On-off switch with volume control. Detection range of 20 feet with angle up to 100 degrees. Chime is paired by code with chip in receiver so multiple chimes in close proximity may be used and only desired receiver will sound. Angle-adjustable mounting bracket included. Pleasant ding-dong tone one of 32 ring options. FCC certified. Operates on 3 AA plus 1 9V battery, not included.