The EC PH Monitor provides 24 hours continuous reading for pH & conductivity. Designed for indoor use, this pH & EC Monitor can be mounted on a wall or hung on a support bar. Ideal for agricultural, horticultural and hydroponics applications where pH and EC levels need to be continuously monitored for optimal plant growth. Features: Backlight and simple calibration Plant-safe green LEDs Large display With Self-Locking function Water-resistant design Replaceable pH probe included With Automatic Temperature Compensation Specifications: Range: 0.00~14.00pH / 0~19.99mS/cm Resolution: 0.01pH / 0.01mS/cm Accuracy: ±0.1pH / ±2%F·S Temperature Compensation: 0~50°C Power Supply: 6V DC (include), with Power adaptor Operating Environment: 0~50°C Size: 88 x 55 x 22 mm Weight: 135g Set Includes: 1 x pH & EC Conductivity Monitor 1 x EC Conductivity Electrode 1 x pH Electrode 2 x pH Calibration Solution (4.003 & 6.864) 1 x EC Calibration Solution (EC 12.88) 2 x Hanging Bracket 1 x Metal Wire Holder 2 x Velcro Tape 1 x Mini Screwdriver 1 x Power Adaptor