What's in the box:

EM285 Automotive Circuit Tester Probe Kit Probe Car Electric Circuit Tester 6-24V DC Automotive Electric System (Standard)

Features:
EM285 circuit tester can be used to test continuity, test polarity of a voltage, check lamp, check electric motor, follow and locate short circuits, test for bad ground contacts etc.
Short-circuit protection.
Easy instruction.
The cable length is about 16ft which allows you test any electrical system easily.
Circuit tester works on all 6-24V D C test kit, including cars, boats, trailers, fuel pumps, relays, and more.

Specifications:
Operation Voltage: 6-24V D C
Cable Length: 16ft
Overload Protection: 8A (When the current exceeds 8A, this item will disconnect the current automatically.)
Package size: 265*90*40mm/10.43*3.54*1.57in
Package weight: 320g/11.29oz

Note:
Operation Instrcutions:
Unroll the unit's cable
Clamp the red clip to the positive terminal of the vehicle's batterys
Clamp the black clip to the negative terminal of the vehicle's batterys

Packing List:
1*Circuit Tester