What door contact means
A door contact is an alarm sensor made of a magnet and a switch that tells the alarm panel when a door or window opens.
Also called door sensor, magnetic contact.
Where it matters on a security and low voltage job
Recessed wired contacts are invisible but need drilling; wireless surface contacts are quick but need batteries. Give the customer the choice and note battery replacement in the service plan.
What it costs
Jobs that involve door contact 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