The DVB01 module is a multi-functional voltage monitoring controller using an industrial grade microcontroller as the main control unit, measuring a wide range of high precision. The controller prefers 5 different functions and can customize and add other specific functions according to the user's requirements. User can set upper voltage limit and lower voltage limit. The module is made of genuine high-quality components, carefully processed, stable, can be widely used in a variety of voltage measurement and control applications. Functions: 1. Provide users with 5 functions to choose from to meet more application requirements 2. User can set upper voltage limit and lower voltage limit 3. Measuring range 0-100V DC, measuring accuracy 0.1V. 5. Increase pull-in delay and disconnect delay function 6. All setting parameters can be saved automatically, the power loss content is not lost 7. New delay 0-99.9 seconds and 0-99.9 seconds pull delay Module function: Feature 1: Voltage measurement: select this function, the relay will not work, digital current measurement voltage; Feature 2: Charge monitoring: when the measuring voltage is lower than the lower limit voltage, the relay is pulled in, higher than the upper limit voltage, the relay is disconnected; Feature 3: Discharge monitoring: when the measuring voltage is higher than the upper limit voltage, the relay is pulled in, lower than the lower limit voltage, the relay is disconnected; Feature 4: Pull-in interval: when the test voltage is between the upper and lower limits, the relay is pulled in and other conditions are disconnected; Feature 5: Input out of range: when the measuring voltage is lower than the lower limit voltage or the measuring voltage is higher than the upper limit voltage, the relay is pulled in; otherwise the relay is disconnected. Warm tip: The controller will automatically judge which is the upper limit voltage and which is the lower limit voltage of the preset voltage V1 and V2 according to different functions Specification: Red colour Material: plastic Working voltage: DC12V / 24V (optional) (should not exceed the rated voltage of /- 10%) Working Current: