This product is mainly use to detect whether he automobile relay is normal, Simple and fast throughthe display area analysis to 12V, 24V relay. Features: The product s equipped with two 18650 large capacity batteries durable . Convenientfor continuous use without extemal power supply . Equipped with a set of charger , in low power , can be charged for unlimited use. The product adopts engineering designample appearance and clear displalighting LEDEasy to use , flexible to carry. Automobile relay that can detect 12V,24Vfour-pin , five-pin. The detector can properly check the relay contact function. The tester observes contact data, closure time, relay inertia at each test stage, etc. If the test is qualified, the green light will be on. Specification: Application:12V and 24V automotive relays Input voltage: 100V-240V Color: Black Item Size: 20 * 9.5 * 2.8cm Package Weight: 540G Package List: 1XRelay Tester 1XCharger 2XBattery