· APPLICATION --- The battery testers can be used for testing battery voltage and capacity for electric motorcycle, motorcycle，golf cart,automotive , car, marine, RV, boat, etc. · APPLICABLE BATTERY --- SUPNOVA digital battery monitor is suitable for 7-100V (12v 24v 36v 48v 60v 72v 84v) Ternary lithium battery, lead-acid battery, lithium iron phosphate battery. Default 12 volt lead acid battery . · PROTECTION ---·Fully closed shell and IPX7 waterproof ,dustproof it can be used for indoor and outdoor, input reverse connection protectionIt does not generate heat even when used at high voltages for a long time. INSTALLATION ---The red wires for the positive and the black wires for the negative. It can use Double-sided adhesive we provided stick the back on the product .The wires length are 15.75 inches . Buzzer Alarm&Ttemperature--- The battery monitor can set low and high voltage buzzer alarm and short press"M"key can switch voltage and temperature（Celsius).