Baseline biSensor Soil Moisture Sensor — BL-5315B & BL-5311

Baseline biSensor™ soil moisture sensors deliver precise, continuous moisture and temperature data so irrigation runs only when needed. Designed for landscapes, containers, green roofs and water‑feature monitoring, the biSensors reduce water use and maintenance while improving plant health.

• High-precision readings: ±3% volumetric moisture accuracy; measures 5% to fully saturated soil and detects changes under 0.1%.
• Self-calibrating and sealed design: adapts to all soil types; no electrical contact with soil eliminates electrostatic degradation and galvanic corrosion.
• Built-in temperature sensor: used during calibration for accurate soil temperature and moisture correlation.
• Two model options: BL-5315B original (14.95" x 2.25" blade, ~12.96 cu in measured volume) and BL-5311 compact (3.2" x 3.25" blade, ~4.5 cu in measured volume).
• Durable and weather resistant: operates from -4°F to 140°F (-20°C to 60°C), shock and power‑surge resistant, and performs reliably in salty or fertilized soils.
• Easy installation: includes 50 ft of 18‑gauge direct‑burial, dual‑conductor cable; follows manufacturer splice recommendations and two‑wire connection protocol.
• Smart communication and support: true two‑way communication with preassigned serial numbers, conditional five‑year exchange warranty, and controller self‑identification.

Both biSensor models share the same operating features and specifications; choose the 15" original for in‑ground and landscape applications or the 3" compact for green roofs, walls, and containers. Consult the product manual for placement, wiring, and controller configuration details before installation.