What motion detector means
A motion detector is an alarm or lighting sensor, usually passive infrared, that detects a warm body moving in its field.
Also called PIR sensor, motion sensor.
Where it matters on a security and low voltage job
Pets set them off, which leads to false alarm fines and cancelled monitoring. Ask about pets before choosing the sensor and mounting height.
What it costs
Jobs that involve motion detector are priced in the home automation installation cost guide: about $2,400 typical, usually $1,100 to $3,700. The guide shows its sources and what moves the price.
Work it out
- Cost guide: Home automation installation cost
- Tools, templates and guides: Free security and low voltage resources