Specification: _x005f_x000D_ Origin: Mainland China _x005f_x000D_ Type: Relay _x005f_x000D_ Condition: New _x005f_x000D_ Product Size: 57.00x44.00x17.00mm/2.24x1.73x0.67inch _x005f_x000D_ Product Introduction: _x005f_x000D_ 1. In non-setting state, short press SET key, the cycle display: working mode->lower limit voltage->upper limit voltage. _x005f_x000D_ 2. In non-setting state, long press SET key for 2 seconds, enter into parameter setting state; the display shows F01, press +- key to select the parameter to be set, F01 (upper limit voltage), F02 (lower limit voltage), F03 working mode, F04 voltage calibration value. _x005f_x000D_ 3. After selecting the parameters to be set, short press SET key to enter the parameter setting state, press +- key to adjust, when the lower limit voltage is greater than or equal to the upper limit voltage, the display shows Err for 1 second to prompt the user. When the lower limit voltage is equal to the upper limit voltage, close the relay output function. _x005f_x000D_ 4. After setting the parameter value, short press SET key to return to the parameter list. _x005f_x000D_ 5. After parameter setting, long press SET for 2 seconds to exit and save the parameters. _x005f_x000D_ 6. In the non-setting state, press and hold SET and + key at the same time for 2 seconds to restore the factory setting. _x005f_x000D_ 7. Long press - close or open the digital tube to show the energy saving mode _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x005f_x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1*Voltage Detection Relay Switch Module 1.Versatile Voltage Detection: This voltage detection relay switch module offers comprehensive monitoring and control capabilities for your DC12V 12A system. With its compact dimensions of 57.00x44.00x17.00mm/2.24x1.73x0.67inch, it provides accurate voltage detection and protection in a compact package. 2.Easy Parameter Setup: Effortlessly configure the digital voltage control relay module's settings with the intuitive interface. A short press of the SET button allows you to cycle through the display, showcasing the working mode, lower voltage limit, and upper voltage limit. 3.Error-Free Settings: The upper & lower limit control relay ensures error-free parameter adjustment. When the lower voltage limit exceeds or equals the upper voltage limit, the display shows an "Err" message for 1 second, signaling the need for correction. 4.Convenient Parameter List: After setting the desired parameter values, a short press of the SET button of this voltage detection charging discharge monitor returns you to the parameter list, making it easy to review and modify settings as needed. 5.User-Friendly Operations: Save time and effort with the LED voltmeter charging discharge monitor's user-friendly features. A long press of the SET button for 2 seconds allows you to exit and save the parameters.