8 Pulse Modes Fuel Injector Cleaner Tester 12V Short Circuit Protection for Car Maintenance Features： 1、Test 2 Injectors Simultaneously: Fuel injector cleaner tester can help you diagnose and clean injectors, easily identify common faults such as stuck, blocked, leaked or burnt-out conditions of the fuel injector. Compared with other fuel injector cleaner and tester with only one pair of pulse output terminals(black&red test lead), our fuel injector tester has 2 pulse output terminals(two pairs of test leads), which can test two fuel injectors at the same time for comparison. 2、8 Pulse Modes: The fuel injector tester is designed with LCD display and 8 pulse modes, which composed of 4 pulse signal output modes and 2 output voltage levels: Short/ Medium/ Long/ Continuous pulse modes + High/Low power drive modes. This fuel injector cleaning machine can help you to identify good and bad injectors when the engine is off. You can choose any mode as you need. 3、Short Circuit Protection: This fuel injector cleaner and tester is deigned with power input reverse connection protection and output short circuit protection function. In the case of a damaged fuel injector or a short circuit of the pulse output terminal, the power indicator light of the fuel injector cleaner tool will flash to prompt you. 4、Convenient for Operating: The length of power cord is up to 29.92inch/76cm and its test lead is 11.81inch/30cm, which is more convenient for you to connect and use. The wires are made of superior silica gel, which has better high and low temperature resistance. 5、Uses 12V Vehicle Battery For Power: Fuel injector tester is powered by 12V battery or an external DC 12V (recommended at least 1.5A) power adapter. It works with engine off and can work with any fuel pressure tester(NOTE: Gasoline car only, NOT the diesel engine). Specification： Color: Black and Orange Main Material: ABS Power Supply: 12V Battery or DC 12V (Recommended 2A) Power Adapter Working Conditions: 0℃-40℃; Relative Humidity: ≤80% Storage Conditions: -20℃-50℃; Relative Humidity: ≤85% Power Supply Cable Length: Approx. 76cm/29.92inch Test Lead Cable Length: Approx. 30cm/11.81inch Product Size: Approx. 11.8 x 8 x 2.5cm/4.65 x 3.15 x 0.98in Package Size: Approx. 17 x 13 x 6cm/6.69 x 5.12 x 2.36in ? Package Weight: Approx.275g Package List： 1 * Fuel Injector Tester 1 * Storage Bag 1 * User Manual (with English, German, French, Italian, Spanish and Japanese)