Battery-Powered Automotive Relay Tester for 12V 4 & 5 Pin Relays – LED Indicator
Battery-Powered Automotive Relay Tester. Why choose our Relay Tester?. - Conveniently tests 12V 4 & 5 Pin Relays. - LED Indicator for clear results. Instant results with a clear LED indicator: green for pass and red for fail.