Who do you choose? Now turn to the choice of the manufacturer (or supplier). Now the market can find a lot of firms the main supplier of which is "BiznesMebel" offering shelf equipment. Some of them – local producers, while another offers the products of foreign (German, Italian and other) companies. Very often employees and business clients opt for local producers. Why? Yes, because the warehouse has to be a 'live'. It can grow in size and height, regroup, move from one room to another, etc.
And therefore, it should be possible dozakazat elements shelf equipment (frames, beams, crossbars, decking) to quickly retrofit the warehouse. And easier to do when the hardware manufacturer – seat. You to bolts? This is followed by a choice of racking system – or rather, the principle of fastening elements for shelf complex (module) to each other. Currently, you have options: a fixed hook, bolt compounds; mixed (1 + 2). What is a fixed hook? One element of perforated holes of irregular shape, the other cut through the arch and the stamp of the hook (hook). The compound is made by institutions caught in the hole and it locks into position.
What are the advantages of this compound? The first is ease of production (and hence the speed and low cost) and ease of installation – no fittings. Furthermore, this scheme has following drawbacks: when the perforation holes are burrs, hooks often , the paint is applied too thickly. From this hook is often not included in the hole without a sledgehammer. Before installation required additional limb nearly every hook. To hook is not released from the compound during the operation rack complex, it is fixed by a special holder. The presence of the latter – a pledge the reliability of the design. But to trace its presence in the long-term use of racks, the height of tiers changed many times, almost impossible. When the process includes the 'human factor', the process becomes unpredictable. 'Latch is set or not set?'. This idea would tear the customer constantly. The above-mentioned risks are not racking system with bolted joints. Discomfort in her only one – the presence of fittings: bolts. But hardware is not afraid of any dynamic loads, uneven floors, 'human factor', etc. As an example: The maximum load on the bolt diameter of 12 mm under a load of tiers of shelving in the 3 m is 375 kg, and margin of the bolt – 1500 kg (!). All of the above options for mounting the modules are used in imported and domestic shelves. Nashi with the gain in price, but still inferior to foreign analogues in Technology production and product range. But the attractiveness of domestic shelves lately been caught up with 'foreigners'.
The operating principle of gsm signaling is that after firing any wireless motion sensor or door opening, and use a panic button activated a siren and immediately begin an alert via gsm channel by using sms (MMS) messages or phone calls to the owner or point guard. The user has the opportunity to record all messages, but with a special speaker to maintain direct feedback from the protected object. Consider some typical key system parameters GSM-alarm system. The first important parameter: gsm alarm system must be vandal, that is located in a secure metal case, where has all the elements, including – GSM-terminal block to connect cables, power supply. All this is necessary to perform the main functions of the system – the transfer of alarm sms or mms messages, and the inclusion of other devices. Well casing protects it from Snoopy.
The second option is that device must have no sufficient number of connectors for connecting various sensors signal. It is desirable that protected areas have been programmed – for example, the first connects to a chain of sensors movement, the second – the chain of Smoke detectors for the third – a reed switch on the front door, while the fourth – a chain of impact sensors. Also, do not interfere with some additional outputs for actuators (eg, light and reminders). The third parameter is characterized by the need to pay the availability and quality of the built-in power supply of special attention. After all, uninterruptible power supply and battery should provide a reliable the work of all elements of GSM-system (centralized and sensors connected to it) when a power failure for at least a day.