China Jingdao Machinery & Electronic Co., Ltd. is one of the random generators manufacturer and random generator dealer in China that has patents on the motors and generators design. There isn't any problem with IP protection laws when you buy our generator, motor, engines, diesel, gearmotors and other power supply and motor-driven items, even in strict regions, such as North America and Europe. Our company has obtained the certifications of ISO9001-2000, GS/TUV, CE, VL, EPA, QHS, SON, CAP and SRS and we have won EPA 2005 Motor Year Certification. We'll print custom logos and random generator product documentation in your language, and provide spare parts for easily worn down components. We also can design and deliver OEM/ODM samples in one month.

Prh-ZG2 works as an independent unit for controlling personnel staff. There is already integrated a power supply for the connection to 230Vac, including a switch within the mains cable. Furthermore you can see on the picture above a high-quality silver coloured pushbutton to order the calculated random decision '"red'"or "green", which means "control" or "pass". The Housing can be mounted on a wall or table with only two screws. Dimensions: 13cm x 9cm, height: circa 5cm. 230Vac / 3 VA , mains cable / mains switch , internal fuse. High grade pushbutton with superior tactile feel to order the calculated random decision '"red'"or "green", which means "control" or "pass". The setting is done normally only one time with srewing two internal binary coded decimal switches. Following there are for example some rates which are correspond to the average number of controlled passes (red): 0 0 = 0,5% = average every twohundredths person is to be controlled (red). 0 1 = 1% average every hundredths person is to be controlled (red). 5 0 = 50% average every second person is to be controlled (red).

This circuit can be used as a guessing number game or the lower or higher winning number or other applications of your choice. An LED is connected to each output as shown with a current limiting resistor (1K) connected to ground. The Fast clock circuit is used connected in series with a simple push or toggle switch connected to pin 14 of the IC as shown . The oscillator frequency can be adjusted with RV1 . Another additional ON/OFF switch should be used for the power supply to pin 16 . When the power is turned on the oscillator is activated and when the push button is depressed the LEDs will start flashing in sequence at the rate set by the oscillating Fast Clock Trigger and as the button is released only one LED will remain lit at random. Each LED could be identified as a labeled number or letter hidden behind a small amber window panel .