Security Devices Dealers in Dharampeth, Nagpur

7" Touch Screen & Physical Buttons Pixel:800*480, Aluminum Surface Shell Digital Photo Frame Function Supports Second Outdoor Unit at the Entrance of Individual Apartments SD Card Slot (up to 32G) Support SD Card to Download Doorbell Music (MP3 Format) Smart Home Control Protocol (485 Interface) 8 Zone Alarm, Three-state Detection Support Alarm, Door Contact, Gas and Smoking Sensors, Manual Alarm, Infrared Sensor Intercom between Apartments Record Massage RJ45 Wiring Port

Our company procures Video Door Phone Cameras from the well-reputed dealers in the market, which hold vast experience in this domain. Video Door Phone Cameras are ideal for the security of apartments, residential complexes, villas and bungalows. We always deliver Video Door Phone Cameras on time so as to maintain our reputation in the market. We are efficient enough to process bulk orders for Video Door Phone Cameras.

• Type: Wireless Burglar Alarm
• Material: Plastic
• Color: Black, Blue, Grey, White
• Feature: Durable
• Voltage: 110V, 220V
• Power Source: Electric

Ultrasonic Sound Burglar Alarm gives alarm on interruption of Ultrasonic sound beam. The circuit arrangement for an ultrasonic burglar security system operates in accordance with the Doppler principle and comprises a transmitting transducer which is fed from an oscillator with an ac voltage and continuously transmits ultrasonic radiation during operation, a receiving transducer and a receiving circuit connected thereto and having an analysis circuit and a phase detector which continuously compares the signal received by the receiving transducer with the oscillator ac voltage to form a detection signal which is dependent upon the mutual phase angle. The detection signal is fed to the analysis circuit which responds to the ac component thereof. The circuit arrangement includes a phase-locked loop (PLL) which includes a further detector, a low-pass filter following the phase detector and an oscillator. The oscillator has its frequency controlled at a control input and may be formed as a voltage controlled oscillator (VCO). The cut-off frequency of the low-pass filter is designed to be such that only signals which can pass fundamentally without reduction are those whose frequency is lower than a critical frequency F.sub.c =c/E, where c is the speed of sound of the ultrasonic radiation in the area and E is the path of the ultrasonic radiation from the transmitting transducer to a reflective object located in the predetermined maximum range and back to the receiving transducer.Ultrasonic Sound Burglar Alarm is an ultrasonic alarm, also known as a silent alarm. This system that lets out a siren that's inaudible to the human ear. Banks typically use these types of systems. As far as home security goes, having a quick response team in place like the system's corresponding call center is an essential part of this setup. This device uses sound waves that act as motion sensors within the home. The waves are projected in beams which bounce across a room's surface areas. Passive infrared detector beams are the most commonly used, capable of detecting activity, as well as temperature changes. These beams are projected out into a room's space using a coverage lens. How this lens is configured will determine how these beams are dispersed throughout the room. As these are highly sensitive systems, proper positioning and adjustment is necessary to avoid false alarms caused by sunlight and heating systems. This unique Ultrasonic Sound Burglar Alarm makes use of the invisible, inaudible ultrasonic sound beam to detect movements. Ultrasonic transducers operate at maximum efficiency when driven at 40 kHz frequency. So an ultrasonic transmitter and receiver pair operating at 40 kHz is used to control the buzzer or the relay. The transmitter unit is built around CMOS IC CD4001 (see Fig. 1). By adjusting the 22-kilo-ohm preset (VR1), the oscillator frequency can be set to approximately 40 kHz. The ultrasonic transmitter transducer is driven by two complementary buffer stages of CD4001 and its current drain is very low. The receiver unit uses a two-stage 40 kHz preamplifier followed by switching circuit, buzzer driver, etc (see Fig. 2). Adjust VR2 in the receiver circuit till the buzzer stops sounding while the receiver senses ultrasonic sound from the transmitter. When the ultrasonic beam is interrupted by the movement of a person or any other object crossing its path, NPN transistor T4 stops conducting and transistor T5 conducts. It activates the buzzer and LED1 for three to four seconds. This duration depends on the time taken by 470µF capacitor (C9) connected at the base of transistor T5 to discharge fully through resistor R14. The burglar alarm duration can be set to a desired value with the values of C9 and R14.The alarm circuit comprising transmitter, receiver and associated circuits operates off a 9-12V regulated power supply. The receiver circuit requires regulated 12V. You can also use unregulated power supply here. Align the ultrasonic transducer such that the signal falls directly on the ultrasonic receiver. The piezobuzzer (BZ1) can be replaced with a relay to control the mains-operated alarm.

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• Door Contact: Shutter Contact
• Window Sensor: Motion Sensor
• Beam Detector: Smart Switch
• Sounder: Intruder Alarm Panel

We are offering intruder alarm system. Intruder alarm system: - with the help of this system you can secure your house for the burglars in this system, if someone’s enters in your premises the alarm will shoot up and parallel phone call will come to you on your mobile. A dvr can be connected to this so that whenever you come back you can see who will entered in your house or shop. shutter alarms and door alarms are in the economic range of these kinds of products.

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