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"Feature 1.The latest 3 in 1 module, set the time, thermometer, voltmeter three kinds of practical functions in one, 2.Using the RX8025T or DS3231 comes TCXO clock chip, with ultra-high timing accuracy and stability, extended temperature probe, effective solution to a temperature module 3.Temperature insufficient registration problems. 4.Wide supply voltage, supports 5 ~ 30V DC. Product parameters 1.Power supply voltage: DC5.0 ~ 30V 2.The temperature function range: -40 to 120 degrees, resolution 0.1 degrees. 3.Voltmeter function Range:DC5 ~ 30V(need pure DC power supply,24V battery is not recommended for use because of possible charging voltage is too high, burning) 4.Size: 40x13mm 5.Color:Red,Green,Blue NOTE 1.When used, the temperature of the probe as far away from the board,or the clock will heat affect the temperature measurement. 2..Please allow 1-2mm error due to manual measurement. Please make sure you do not mind before you bid. 3.The colors may have different as the difference display, please understand. Package include: 1 x Digital Car Clock Time+Temperature+Voltage 3in1 Meter "