Infrared circuit components; infrared locating apparatus; infrared scanners; infrared sensors; bio-sensors; active infra-red sensors; air temperature sensors; dewing sensors; electric current sensors; electric smoke sensors; electrical sensors; dummy sensors; distance sensors; electro-optical sensors; electrochemical gas sensors; electronic anti-theft bollard sensors to prevent shoplifting; electronic control installations for sensors; electronic measurement sensors; electronic pressure sensors; electronic sensors; fibre optical sensors; flame sensors; fluid level sensors; gas sensors; heat sensors; humidity sensors; impact sensors; level sensors; light sensors; magnetic flux sensors; magnetic resistance sensors; magnetic sensors; mass flow sensors; measuring sensors; microwave type intruder sensors; oil-water level sensors; on-off sensors; optical fibre sensors; optical sensors; optical speed sensors; oxygen sensors, other than for medical use; paper sensor switches; passive infrared sensors; passive sensors (other than for medical use); photoelectric sensors; piezoelectric sensors; precision sensors being parts electronic control apparatus; pressure sensors; pyroelectric infrared sensors; remotely controlled cameras and other remotely controlled sensors; sensor switches; sensor apparatus, other than for medical use; sensors (measurement apparatus), other than for medical use; sensors for monitoring rooms against unauthorised access; sensors for monitoring grounds against unauthorised access; sensors for monitoring buildings against unauthorised access; sensors for real time data input apparatus; sensors for real time data output apparatus; sensors for securing buildings against unauthorised access; sensors for securing grounds against unauthorised access; sensors for securing rooms against unauthorised access; shock sensors; shutter sensors; smoke sensors; superheated steam sterilisable sensors; synchro sensors; temperature sensors (thermostats) incorporating bi-metallic discs; temperature sensors (thermostats) incorporating expansion rods; temperature sensors for industrial use; thermal sensors (thermostats); ultrasonic sensors, other than for medical use; vibration sensors; ultrasonic wave type intruder sensors; movement sensors; apparatus for sensing movement; electronic bricks to produce movement; rotary movement measuring apparatus; rotary movement signalling apparatus; alarm sensors; precision sensors being parts of alarm systems; alarms for controlling the movement of human beings; alarm panels; alarm management installations; alarm management apparatus; alarm installations for buildings; alarm devices (other than for vehicles); alarm control apparatus; alarm bells, electric; alarm bells; acoustic alarms; alarm instruments, other than for vehicles; alarm signalling apparatus; alarm signalling receivers; alarm signalling transmitters; alarm systems incorporating control and visual display apparatus; alarms; anti-theft alarm apparatus (other than for vehicles); anti-theft alarm installations (other than for vehicles); anti-theft alarms (other than for vehicles); anti-theft alarms adapted for use with video apparatus; anti-theft electrical alarm systems (other than for vehicles); audible alarms (other than for vehicles); burglar alarm apparatus (other than for vehicles); control centres being parts of alarm systems; electric alarms for smoke; electrical control panels for burglar alarm systems; intruder alarms (other than for vehicles); locks (electric) with alarms; personal alarm apparatus; personal alarms; radio alarm apparatus; radios incorporating alarms; remotely controlled alarm locks; remote alarms (other than anti-theft for vehicles); remote controls for operating vehicle alarms; reverse motion alarms, other than for vehicles; safety alarms (other than for vehicles); security alarm systems (other than for vehicles); security alarms (other than for vehicles); smoke alarms; sound alarms; sound alarms, other than for vehicles; warning alarms (other than for vehicles); theft prevention alarms (other than for vehicles); infrared detectors; ignition spark detectors and sensors for internal combustion engines; detectors; electric smoke detectors; flame detectors; heat detectors; ignition spark detectors; gas detectors, other than for medical use; intruder detectors (other than for vehicles); intrusion detectors (other than for vehicles); leak detectors for hydrocarbons; magnetic detectors; magnetic metal detector monitors; metal detectors; passive infrared detectors; smoke detectors; vibration detectors; video detectors; infrared filters; infrared thermometers; data feeders for use with artificial intelligence; data feeders linked with artificial intelligence; fall arrest apparatus; fall arresting safety apparatus for the protection of loads; fall arresting safety apparatus for the protection of workmen; fire sensors; electric alarms for fire; fire alarms; fire detectors; infrared detection apparatus; intruder detecting sensors (other than anti-theft apparatus for vehicles); magnetic sensors being parts of intruder detection alarm systems; apparatus for detecting gases; apparatus for detecting light obscuring substances; apparatus for detecting smoke; apparatus for detecting vapours; apparatus for fault detection; apparatus for the detection of explosives; apparatus for the detection of moisture; detecting apparatus for scientific laboratory use; detecting instruments, other than for medical use; gas detecting apparatus; flaw detecting instruments; flaw detecting apparatus; gas detecting instruments; gas liquid detection apparatus; hazard detecting apparatus for use in buildings; hazard detecting installations for use in buildings; heat detecting apparatus; heat detecting instruments; intruder detecting apparatus (other than for vehicles); intruder detecting instruments (other than for vehicles); leak detection apparatus; leak detection instruments; particle detecting apparatus; sensing apparatus being parts of intruder detection apparatus; smoke detecting apparatus; smoke detection apparatus; thermal detection devices (other than for medical use); ultraviolet detection apparatus; water leakage detection alarms; water level detection apparatus; apparatus for detecting fire; fire detection installations; fire detection apparatus; fire detecting instruments; fire detecting installations; fire detecting apparatus; apparatus for the detection of micro-organisms in foods; apparatus for the detection of radiation; detection apparatus employing acoustic waves (other than for medical use); detection apparatus employing electromagnetic waves (other than for medical use); detection apparatus for chemical substances (other than for medical use); detection apparatus, other than for medical use; laboratory apparatus for detecting bacteria (other than for medical use); counting instruments; counting apparatus; electronic counting apparatus; counting machines; proportioning (counting) apparatus