S300 Pro2 Substrate pH Temp Meter

Unlock Your Pot-tential with S300 Pro2 Substrate pH Temp Meter

In South African grows, substrate pH swings from hard water, organic amendments or inconsistent irrigation can lock out nutrients, stunt roots or cause deficiencies before you spot the signs. The S300 Pro2 Substrate pH Temp Meter gives you fast, reliable control: a durable pen with a 120 cm cable electrode that reaches deep into pots, coco slabs, peat bags or soil beds for direct, accurate readings (0.00–14.00 pH, 0–50 °C temp). The upgraded black display with white characters is easy to read under grow lights or in low-light tents, while 2-point automatic calibration (pH 4.0 & 7.0) and 30-day reminder keep measurements spot-on without guesswork. IP67 waterproof electrode survives moist substrates and accidental dips, the replaceable probe extends lifespan, and ergonomic rubber grip + cap cord make probing comfortable even during long sessions. Store upright with KCl solution in the cap for long electrode life, and AAA batteries (included) with auto shut-off ensure it's always ready. Compact, tough and built for daily use — this meter helps maintain the ideal 5.8–6.5 pH range in any medium for healthier roots, better uptake and maximum yields in hydro, coco, soil or peat setups.

Key Features

• 120 cm cable electrode – reaches deep into pots, slabs & soil for direct substrate readings
• 2-point auto pH calibration – quick, precise setup at 4.0 & 7.0
• Selectable 1 or 2 decimal precision – fine-tune measurements for exact control
• Calibration reminder after 30 days – ensures ongoing accuracy & reliability
• IP67 waterproof electrode – survives moist media & accidental submersion
• Replaceable electrode & AAA batteries – extended lifespan & easy maintenance

Technical Specifications

• pH Range: 0.00 – 14.00
• Temperature Range: 0 – 50 °C (32 – 122 °F)
• Resolution: pH 0.01 or 0.1; Temp 0.1 °C (1.0 °F)
• Accuracy: pH ±0.1; Temp ±0.5 °C (±1 °F)
• Temperature Compensation: Automatic 0 – 50 °C
• Calibration: 2-point auto (pH 4.0 – 7.0)
• Power: 2 × 1.5V AAA batteries (included)
• Auto Power-Off: After 8 minutes
• Waterproof Rating: IP65 (meter); IP67 (electrode)
• Dimensions: 230 × 43 × 43 mm
• Weight: 158 g