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The application can be widely used for continuous monitoring of dissolved oxygen value in solutions such as sewage treatment aeration, boiler feed water, environmental water treatment, pharmaceuticals, aquaculture and tap water. Main features ◇ Imported components and dissolved oxygen membrane head, based on the latest polarographic analysis technology. ◇ Large screen dot matrix LCD display, Chinese menu
1) Eliminate the button switch, place the card on the left side of the card slot to automatically deduct water, slide to the right side of the card slot to automatically cut off water, and stop billing. The design is more user-friendly, more convenient to use, and more waterproof and moisture-proof. 2) 8-digit LED display, showing the balance, rate and countdown in the card
Features 1. Integrated design, easy for users to install and construct; 2. All copper solenoid valve is used to control water switching; 3. Can be used in cold and hot water environments; 4.8-bit high-brightness LED digital display, also suitable for outdoor Use under light; 5. The IC card used by the system is MF1 contactless from PHILIPS
Features: 1. Unique patented shell design: A. Fully sealed without button design to avoid water mist penetration and damage to components. B. Proprietary card slot card left and right dial design, when the card is dialed to the left sensing area, water will flow out, and when it is dialed to the right, the water will stop. Very convenient. 2, 8-digit digital display.
Functional requirements:  hot water charge, cold water free  water control machine can be placed in a humid environment for a long time, the water card used must be waterproof, the water card can be printed by the school-designated pictures and text description Realize the requirements of reporting loss, setting rates, etc.
Features of integrated water control machine: 1. Integrated three-in-one design of pulse flow meter, electric valve, and credit card charge controller; completely blocked staff (students) stealing water and easy man-made destruction (magnet solenoid valve, direct 12V power supply to the solenoid valve); 2, easy and simple installation, and installation water
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