Electrolyte level indicator Smart blinky PRO (with sound)

Electrolyte level indicator Smart blinky PRO (with sound). Let your batteries tell you when they need water. Save time and avoid costly permanent damage to your batteries with SmartBlinky Pro’s light and sound low water indicator. SmartBlinky Pro provides the brightest and smartest indication on the market, so that you know when to fill your batteries, keeping them in prime condition, whilst saving time from unnecessary checking. With Patented Smart Sensing Technology, innovative smart delay action, and the SmartBEEP audible alarm, your batteries can stay topped up and on top form.