Motorcycle Electronic Timer Time Thermometer Voltmeter 4-in-1 S7 Waterproof Touch Screen Voltage Meter with Digital Display -- Features: Touch screen, long press to open/close, bring you a good experience. S7 waterproof, 12-hour and 24-hour switching, maximum timer time 999 seconds. 4-in-1 multi-function meter, equipped with timer, time, air or water thermometer, voltage meter. Small and compact, unique appearance, easy to use. High quality material, never flash, waterproof, high accuracy. High water temperature/low voltage alarm. Default value low voltage alarm 11.5vi default high value temperature alarm 75, which can be set by yourself. Specifications: Material: PC Voltage: 9-24V Dia: approx. 4.7cm/1.85in Type: air temperature/water temperature (optional) Note: Temperature type water must be connected with a special water temperature sensor. Red wire connected to the positive pole, white wire connected to the negative pole and blue wire connected to the electric door lock. Package includes: 1 set voltmeter thermometer