RCCSKJ Two in one large current switch  2110
Product features:                                                                                    
 Integrated high-current switch and three-digit digital display battery voltage in real time
 Using ultra-high brightness digital display, the reading is still clearly visible even under the sun

technical parameter:
 Working voltage: 3.5-13V
 Switch working current: 0-15A
 Weight: 60g (including lead weight)
 Volume: 40mm (length) * 22mm (width) * 34mm (height)

Precautions for use:
 The battery polarity must not be reversed
 Do not touch grease or water or close to corrosive objects during installation