<p>King Dick Hygrometer Moisture Tester</p> 1 x AAA / UM4 1.5V - Ex Display

Measures moisture content and internal battery condition. Simple to operate. Coloured LEDs green/amber/red indicate moisture content. At 3% moisture fluid change recommended and at 4% fluid change necessary. Guidance notes printed on tool. On-off button, test probe protection cap and integral pocket clip. Requires 1 x AAA/UM4 1.5V battery.