Keep pressing and releasing the button, till get the expected value.
When the voltage display flashes, the meter is in the setting mode. Switch on the power, and release the button.When the power is switched off, press down the button and hold it.With installation kit and mating connector.If you want us to set the voltage indicator before its shipment, please contact us and send us the setting information (low / high voltage). Typical application: photovoltaic battery charging / discharging controller. The output is switched on when the voltage is lower than the low voltage setting, and the output is switched off when the voltage is higher than the high voltage setting. Type 3: both low-voltage and over-voltage protection.
Typical application: electric vehicle / vessel. The output is switched on when the voltage is lower than the low voltage setting. Typical application: battery charger, DC power converter, communication system / remote control system DC source, etc. The output is switched on when the voltage is higher than the high voltage setting. TQZN-12 and TQZN-24 are adjustable for setting the low voltage (empty level, OUTPUT ON) and high voltage (full level, OUTPUT OFF), typically applied for switching automatically on / off a DC relay. With a high capacity MOSFET output (maximum current rated for 4 amperes), these meters offer additional control function to users, helping to realize the automation of system. The DC voltage meters TQZN-12 and TQZN-24 are used as battery charging / discharging level indicators (BDI) for electric vehicle / vessel, battery charger, solar power generating system and other battery power (DC source) driving / conserving systems. 12V / 24V Digital DC Voltage Indicator Accurate Numeric Display Of DC Voltage, Adjustable & Optional Control Function
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