Baby monitors are a relatively new invention. The idea of the major principle is simple – provide the ability to move around the house or near it and have the opportunity to observe your child. Now you can hear your child in time to come to help or just to watch him until he or she sleeps. You just put a transmitter or a camera at a distance of 3m from the child so that he caught all of sounds and with its own monitor, you can move on home, or simply put the receiver down beside her. Most baby monitors (monitors,) runs on batteries.
Some models allow your child to hear your voice, it will allow you, if necessary, to calm him down. But these helpers to the parents also have some disadvantages: the baby monitor and baby monitors, sometimes can play noise because of the presence of wireless phones or other mobile devices. Also, baby monitors can pick up sound from other baby. That’s why sometimes you should not discuss personal matters with activated baby monitor. A word of warning: To avoid neschatnyh cases never hold water or other liquids near the baby monitor (baby monitors). What to consider when choosing baby monitor (baby monitors): Compact: The smaller model is better (easier to carry). Discharge of the battery indicator: If your receiver batteries run out you can not hear the baby crying, so choose a baby monitor (baby monitors) that will warn of low battery. Light warning: When you watch TV or talk with someone, you can not hear faint sounds and miss who publishes your child.
But if the receiver has a lighted, then looked at him you can immediately determine that a child needs your attention. Additional receiver: There are times when every parent wants to have need a separate receiver or a receiver to leave the room and the other to carry around. Some baby monitors with two parent vypuskayutsya receivers, you can choose the baby monitor with two receivers parent if you wish. Connecting to a TV: Some baby monitors have the ability to connect to your TV. You can watch the screen as your child plays in his playpen. Baby monitors stayut more popular because of the possibility visual observation of the child. Baby monitors with the ability to communicate There are models of baby monitors that let you talk with your child, sing to him and even send anything. Some parents use this function to calm the child on the road heading to the nursery or to lull the baby waking up. If the child is old enough to respond, you can talk to him. You can also draw attention to low-cost walkie-talkies that can be used as baby monitors.
Cell phone Nokia N97 mini – is the brother of fashion version of the Nokia N 97, which has different dimensions (113mmx52.5mmh14.5mm), less memory, and therefore the cost of the smartphone below. Basically, it's all the differences between the brothers Nokia N97. Key features of Nokia N97 Mini is the same as and that of its predecessor. Smartphone designed for a certain platform, S60 (fifth edition), and focused mainly on online-services. According to its uniform factor of Nokia N97 Mini – a slider (side), which has a full keyboard QWERTY, fine in the hand and weighs one hundred thirty-eight grams. Smartphone supports memory cards microSD, has an internal memory of 8 GB (32 GB predecessor). Nokia N97 Mini has two colors – garnet (Garnet) and black cherry (Cherry Black), with a metal trim bezel.
The rear side of metal. When opening the angle between the phone's keypad and the screen is 35 degrees. NOKIA N97 Mini display has a diagonal of 3.2 inches, 640×360 pixels resolution and can display more than 16 million colors. Proximity sensor (Proximity sensor) – the unusual ability of the phone. When the user brings the smartphone to the face, the sensor immediately automatically locks the screen. The volume of the battery of 1200mAh, which provides up to 320 hours the phone in standby for up to seven hours of talk time, as well as continuous music playback around thirty hours. Nokia N97 Mini has a camera with optics Carl-Zeiss, which has a resolution of five megapixels, LED flash and auto focus that allows you to make wonderful pictures. Communications of the smartphone has Bluetooth 2.0 with EDR, and also has a module to support wireless Wi-Fi. The positive point is the presence in the cellular FM radio. In a word, N97 Mini has all the qualities neeobhodimymi that the flagship N97.
Another mode of transmission is that the command is passed on regular wire car by a weak signal, similar to the interference from the spark plugs. The advantages of this method is that no wires are not connected directly to the alarm system and the output relay, hence the name of the relay – 'Wireless'. It can be hidden in a bundle of regular wires, find and neutralize it is practically impossible. But this method requires more security team itself – theoretically it can 'eavesdrop' and write any wire a car, so the commands must be encrypted variable code. The third way to – on the radio.
The security system is equipped with a transmitter, and the output relay – receiver. This method advantages of wireless relay continues, but has some limitations related to the fact that getting the team to allow the engine may be difficult because of interference. Situational relay may be possible to to determine what is blocking relay circuit, the absence of any signal or even the diagnostic reports a car. To prevent this, the digital relays are becoming more complex, and are ability to decide when they lockable chain must be restored, and when – no. For example, the relay can simulate engine failure, while taking into account what sort of circuit blocks it, and install the degree of 'seriousness' fault. This approach to the blocking of the engine is possible only if the security system of communication between its modules and actuators. Class channel management The most common and convenient control channel security system is to control the radio, using the remote control.