alarm — 1. noun 1) the girl spun round in alarm Syn: fear, anxiety, apprehension, distress, agitation, consternation, fright, panic 2) a fire alarm Syn: warning, danger signal, siren … Synonyms and antonyms dictionary
Burglar alarm — Silent alarm redirects here. For the album, see Silent Alarm (album). Burglar (or intrusion), fire and safety alarms are all electronic today. Sensors are connected to a control unit via a low voltage hardwire or narrowband RF signal which is… … Wikipedia
Bedwetting alarm — A bedwetting alarm is an electronic device used as a treatment option for Nocturnal Enuresis. The alarm sounds when the wearer urinates. This can help condition the child to wake at the sensation of a full bladder. Alarms come in several… … Wikipedia
Missile Defense Alarm System — The Missile Defense Alarm System was an American system of 12 early warning satellites that provided limited notice of Soviet intercontinental ballistic missile launches between 1960 and 1966. Originally intended to serve as a complete early… … Wikipedia
Car alarm — This article is about the electronic device. For the Kim Possible episode, see Car Alarm (TV Episode). A car alarm is an electronic device installed in a vehicle in an attempt to discourage theft of the vehicle itself, its contents, or both. Car… … Wikipedia
Passive infrared sensor — A Passive InfraRed sensor (PIR sensor) is an electronic device that measures infrared (IR) light radiating from objects in its field of view. PIR sensors are often used in the construction of PIR based motion detectors (see below). Apparent… … Wikipedia
PIR-Sensor — Ein Bewegungsmelder ist ein elektronischer Sensor, der Bewegungen in seiner näheren Umgebung erkennt und dadurch als elektrischer Schalter arbeiten kann. Hauptsächlich wird er zum Einschalten einer Beleuchtung oder zum Auslösen eines Alarms… … Deutsch Wikipedia
False alarm — For a more generic meaning, see False positive. For other uses, see False alarm (disambiguation). A false alarm, also called a nuisance alarm, is the phony report of an emergency, causing unnecessary panic and/or bringing resources (such as… … Wikipedia
Burglar alarm control panel — A burglar alarm control panel is a wall mounted unit where the detection devices and wiring of the alarm are ultimately connected and managed. These include devices such as bells, sirens, door contacts, motion detectors, etc. Typical panels are… … Wikipedia
Catalytic bead sensor — A catalytic bead sensor is a type of sensor that is used for gasdetection.PrincipleThe catalytic bead sensor consist of two coils of fine platinum wire each embedded in a bead of alumina, connected electrically in a Wheatstone bridge circuit. One … Wikipedia
