Smart Blinky Standard - ACC-SWM3-S (probe length 122mm - M4)

SmartBlinky Battery Watering Monitor

The SmartBlinky monitor features patented Smart Sensing Technology, which eliminates false indications and prevents unnecessary watering. And the bright green (water level OK) and red (water needed) lights provide a much clearer indication that the battery requires watering.

Instruction here

• Ideal for batteries where the top of the battery can be seen. Green & Red indication.