Feature 1.Digital display voltage battery Candetect 12V-24V battery voltage value 2.Silicone alligator clip Non-slipinsulated handlestrong clamping force alligator clip 3.Universal Inputy gusset 4 pins can be measured/5pins are suitable fora variety of relays 4.One-piece design Detection data ismore stable Specification: Applicable Pins:5-pin / 4-pin Alligator Clip Opening Size:2.1 cm / 0.82 inch Battery Detection Voltage Range:11V ~ 25V Alligator Clip Wire Length:42 cm / 16.54 inch Applicable Coil Resistance:200 Digital Display:Bright Screen Usage Instructions Power Connection: Must be connected to a car battery for power supply. Detection Indicator Lights: Red Light On: Indicates a problem with the detected relay. Green Light On: Indicates the relay is functioning properly. Package including: 1.Relaydetector 2.Positive and negative alligatorclip 3.Manual