Water-proof metal electrode. Lightweight and portable design, convenient for indoor and outdoor use. This dual meter provides a fast, simple, accurate method to measure both pH and moisture levels in various types of soil. No battery required. Simply insert the probe into the soil to a depth of 4-6 inches, then toggle the switch to test moisture or pH. Ideal for quick pH and moisture assessment in vineyards, orchards, fields, nurseries, lawns, gardens, and planters. Measuring range: 3-8 pH, 1-8 moisture. Resolution: 0.2 pH. Accuracy: ±0.2 pH (suitable for agricultural and classroom use). Operating temperature: 5°C to 50°C (41°F to 122°F). Device size: 5.1 x 11.2 cm (2 x 4.41 inches). Probe length: 30 cm (11.81 inches). Package includes: 1 x Soil pH and Moisture Meter Tester. Note: New and old versions may be shipped at random; please ensure acceptance before ordering.