Practical motion sensor set: you will receive 3 pieces of motion detectors in black colors, the load power of approximately 5W to 100W, and the working voltage is about DC 2.7 V-12V, and reusable for you to use Infrared sensor switch utilizes human motion infrared rays as control signal sources, when one enters the detection field, it will the controlled load at once. sensitivity: the smart motion sensor light switch is a digital intelligent automatic control product, which is highly sensitive and to use; When an object or person enters the sensing range, this pir detector can be automatically turned on, and can be automatically delayed off after the person leaves, which can avoid the situation of not turning off the light nergy-saving and low heat and low power consumption. Motion sensor turns lights ON automatically when motion is detected and OFF after a - time delay (5sec to 6minutes). People can enter the sensing range and can be automatically turned on,When people leave, they can automatically delay the shutdown, so as to prevent the conventional from being opened. Colour:black Material:plastic Package Contents: 3 x Automatic motion sensors Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.