1. Magnetic steel meter head, more stable measurement 2. No battery, plug and play, no consumption 3. Metal detection sensor, able to detect quickly and accurately 4. One key to switch the pH / humidity 5. Function: detection of humidity / PH 6. Measurement range: temperature (1-8), PH (3-8) 7. Application scenario: greenhouse, garden, orchard, farmland, etc. 8. Size: about 22 x 6cm
