[2pack Soil Moisture Meter ] Dr.meter Hygrometer Moisture Sensor Meter for Garden, Farm, Lawn Plants Indoor & Outdoor(No Battery needed)

https://www.amazon.com/Moisture-Dr-meter-Hygrometer-Outdoor-Battery/dp/B014P97TXM?ref_=bl_dp_s_web_6705578011

• This Soil Moisture Meter used for Soil PH test not for Water PH test. Measure soil's moisture content by just plugging in the probe
• Easy to read moisture levels, including ten scales
• No batteries or electricity needed, plug and read
• Color coded reading system, from red, green to blue
• Compact and portable design for indoor/outdoor use