This car automotiverelay tester is a must-have tool for any car owner or mechanic, with its ability to detect 4 pin/5pin automotiverelays and work with 12/24v voltage. With 2 large capacity 18650 modebatteries, this portable test equipment can be used continuously without the need for an external power supply, making it perfect for on-thegos repairs. Suitable for driver, mechanic, and anyone who wants to take control of their car maintenance, this automotiverelay tester is easy to use, providing accurate measurements and quickresults. Whether you're in-the garage or on the road, this circuit tester is small and easy to carry, making it Perfectfor being placed in briefcases or satchels forquick access to diagnose any carissues. Made of high-quality plastic material, this car relays tester is durable and reliable, ensuring that you'll have a useful and long-lasting tool in your for all of your automotive needs. Working temperature: -20~+50 Colour:Black Material:plastic Package Contents: 1 x Battery Tester Relay Analyzer 2 x 18650 Battery 1 x Charger Base Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.