Fangrui Product Details 1. Aneng 12v24v Car Battery Relay Four-pin Digital Display Tester 2. Power Supply: Connect To The Car Battery 3. Digital Display Voltage Battery, Can Detect The Voltage Value Of 12v-24v Battery 4. Silicone Non-slip Insulation Handle, Thickened Wear-resistant Clamping Teeth With Strong Clamping Force And No Slipping 5. Can Measure 4-pin5-pin For A Variety Of Relays, One-piece Not Easy To Loosen And More Stable Detection Data 6. The Relay Is Inserted Into The Corresponding Tester Socket, And The Test Button Will Automatically Detect It. The Red Light Is Damaged And The Green Light Is Tested Well 7. Non-contact Measurement, The Crocodile Clip Opening Is About 2.1cm, And The Clamping Force Is Strong And Does Not Slip 8. Connect The Crocodile Clip To The Positive And Negative Poles Of The Battery, And The Battery Voltage Will Be Automatically Detected As 24v, Suitable For 11v-25v Batteries 9. Crocodile Clip Opening Size: 2.1cm 10. Crocodile Clip Line Length: 42cm 11. Size: 14x2.7cm