Instruction manual

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SPECIFICATIONS
Power
• 9V DC battery
Current
• Operating 60mA (average)
• Standby Typical less than 4mA
Detection
• Pyroelectric Infrared Sensor.
Detection Distance
• 30 feet max., best at 4.5’ to 24’
Output Sound
• High frequency / Low frequency tone (Ding-Dong)
• 85 - 90dB peak
Operating Range
• -10 to +50
O
C
GLOSSARY OF TERMS
Amplify To enlarge or increase.
Amplitude The greatest difference above a reference, usually zero.
Analogy Likeness or resemblance in relations of different objects.
Attenuate To weaken or reduce.
Bandwidth The group or number of frequencies unaffected by a filter.
Battery A device that generates an electric current through a chemical reaction.
Capacitors Devices that store electronic charges.
Circuit The entire line through which electric current may pass.
Closed Loop Gain Gain after feedback.
Comparator An electronic device to detect voltage differences.
Critical Frequency The frequency at which power in a filter falls to half.
Crystals An inorganic body with plane surfaces in a geometrical form.
Current The flow of electrons.
Detector A device that changes signals into useful information.
Electromagnetic A radiated wave having both electric and magnetic properties.
FET Field Effect Transistor.
Filter A device used to nullify certain waves without altering others.
Frequency The repeated occurance of anything at brief intervals.
Gain To increase or make larger.
Gate A device used to allow or restrict passage.
Generator A device that transforms energy into electric power or signals.
Impedance A device’s resistance to the passage of electrical current.
Infrared Light Rays past the red end of the visible light spectrum.
IR Detector A device that senses the presence of infrared light.
Kit A collection of equipment or components.
Lambda The eleventh letter of the Greek Alphabet.